JP3238277U - Swallow's nest crow access prevention device - Google Patents

Abstract

To provide a crow access prevention tool for a swallow's nest, which lays eggs and raises chicks after the swallow finishes building the nest, and prevents crows from attacking until the chicks leave the nest. A plurality of metal chains 100 having a first length equal to or greater than the height from the head to the toes of a crow, and the chains at predetermined positions around the swallow's nest. The horizontal distance between each of the chains and the perimeter of the swallow's nest is longer than the distance from the beak to the tail of the parent bird of the swallow and the distance from the beak to the tail of the crow. A first positioning gauge that suspends the chain so that it is shorter than the length of the chain and the spacing between adjacent chains is such that the parent bird can move between a swallow's nest and the hanging portion of the chain around it without striking its wings. It has a second positioning gauge which allows entry and exit and suspends the chain so that any one of the plurality of chains will hit the crow's wings when the crow attempts to approach the swallow's nest. [Selection drawing] Fig. 2

Description

The present invention relates to a swallow's nest crow inaccessible device that is very useful for laying eggs and raising chicks after the swallow has finished nesting and preventing invasion from foreign enemy crows while the chicks are growing.

Swallows are migratory birds that come to Japan with the arrival of spring, and in late summer they travel southward for wintering with their parents and young birds born and raised by their parents. During this period, people come and go especially in the area where people live, under the overhanging part on the upper floor of the condominium, under the eaves part on the upper side of the balcony, and in the case of a detached house, under the eaves such as the entrance. Nests are built on the balconies, eggs are laid, warmed and hatched, and then the chicks are often raised as young birds until they can fly around freely.

On the other hand, in Japan's rapidly aging society in recent years, the percentage of people who spend a day at home after retirement is increasing. Therefore, when swallows arrive and start nesting while crying, the above-mentioned people who spend a lot of time during the day can hear and see it and feel the arrival of spring.

In addition, swallows usually nest and lay eggs twice a year to raise chicks and raise them as young birds, so when a swallow's nest is formed, the cute chicks of the swallows cry in the spring. As a natural BGM throughout the summer, it can bring comfort and color to the residents in a monotonous life. Also, for residents, seeing and feeling the birth of a new life and the process by which it grows into a young bird will give them a closer experience of the birth and growth of life, and will make them feel rejuvenated and monotonous. It can be said that it is very preferable for mental health because it moisturizes daily life.

However, the problem is that when such a swallow's nest is formed and the parent bird lays eggs and warms or raises chicks, the parent bird leaves the swallow's nest to search for its own food and chicks. I have to go looking for food. When only eggs and chicks are left in the swallow's nest when the parent bird disappears in this way, crows approach as their favorite food and eat eggs or catch chicks.

Crow nets and others are already known as crow repellents (see, for example, Patent Document 1 and Patent Document 2).

Japanese Patent Application Laid-Open No. 2021-104883 Japanese Unexamined Patent Publication No. 08-228656

In the crow net described in Patent Document 1, if a swallow's nest formed in the above-mentioned place is covered with this net to protect it from crows, the swallow's parent bird's nest cannot enter and exit, and the egg hatches. And chicks will not be able to grow.

Further, in the crow repellent mat described in Patent Document 2, even if it is installed around the swallow's nest, the crow will put his foot on the swallow's nest and cannot produce the effect as a crow repellent.

Therefore, if the swallow's nest is left as it is without effective measures to avoid crows, the swallow's nest, which should moisturize the daily life for the resident, conversely actively attracts unpleasant crows. I will. Along with this, I am looking forward to the hatching of swallow eggs and the growth of chicks, but the invasion of crows deprives me of this fun at once, and on the contrary I feel great stress and my peaceful daily life changes completely. And it becomes a dark thing.

The purpose of the present invention is to lay eggs and raise chicks after the swallows have finished nesting, and it is very useful to prevent invasion from foreign enemy crows before the chicks grow and fledge. The purpose is to provide an access prevention device.

In order to solve the above-mentioned problems, the swallow's nest crow access prevention tool according to the present invention is used.
It is a bird's nest crow access prevention device that prevents crows from approaching the bird's nest made on the underside of the eaves of a detached house or the underside of the overhanging part on the balcony / veranda of an apartment.
A plurality of metal chains having a first length of at least the length corresponding to the height from the head to the toes of the crow, and
The upper end of the plurality of metal chains is the lower surface of the eaves of a detached house or the lower surface of the upper overhanging portion of the balcony / veranda of the condominium, and the plurality of metal chains are placed at predetermined positions around the bird's nest. Fixtures for fixing so as to hang from the lower surface, respectively,
The horizontal distance between each of the plurality of metal chains and the circumference of the swallow's nest is generally longer than the distance from the beak to the tail of the swallow's parent bird and from the distance from the beak to the tail of the crow. A first positioning gauge used to position the mounting position of the fixture on the lower surface in order to suspend the metal chain from the lower surface so as to have a short first interval.
The distance between adjacent chains among the plurality of metal chains allows the parent bird of the swallow to enter and exit between the swallow's nest and the suspended portion of the chain around it without hitting the wings, and the above-mentioned When the crow tries to approach the swallow's nest, at least one of the plurality of chains should be a second interval to hit the crow's feather and prevent the crow from further approaching the swallow's nest. By having a second positioning gauge used to position the mounting position of the fixture on the lower surface in order to suspend the metal chain from the lower surface.
It prevents crows from approaching the swallow's nest created on the underside, which allows the crows to prey on pre-hatched eggs and post-hatched swallow chicks in the swallow's nest. It is characterized by preventing crows from approaching the swallow's nest.

Further, the swallow's nest crow approach preventing device according to claim 2 of the present invention is the swallow's nest crow approach preventing device according to claim 1.
The first interval is in the range of 30 cm to 70 cm, the second interval is in the range of 30 cm to 70 cm, and the length of the metal chain, which is the first length, is. The width is within the range of 30 cm to 100 cm, and the width of the metal chain is characterized by being within the range of 1 cm to 2 cm.

Further, the swallow's nest crow approach preventing device according to claim 3 of the present invention is the swallow's nest crow approach preventing device according to claim 2.
The length of each metal chain is determined so that the first length is 50 cm, and the first positioning is such that the first spacing La = 45 cm and the second spacing Lb = 45 cm. It is characterized in that the lengths of the gauge and the second positioning gauge are defined.

According to the present invention, a swallow's nest crow invasion prevention device is provided which is very useful for laying eggs and raising chicks after the swallow has finished nesting and preventing invasion from foreign enemy crows while the chicks are growing. be able to.

It is a perspective view of the swallow's nest made on the lower surface of the entrance of a detached house or the eaves of the veranda or the lower surface of the overhanging part on the balcony / veranda of the condominium from the side of the building. It is a perspective view which shows the state which attached the crow access prevention tool of the swallow's nest which concerns on this embodiment around the swallow's nest shown in FIG. A plurality of metal chains constituting the crow access prevention device shown in FIG. 2 and these chains are hung on the lower surface of the entrance of a detached house, the lower surface of the eaves of the balcony, or the lower surface of the upper overhanging portion of the balcony / balcony of the condominium. The fixtures used for this, and the first positioning gauge used to hang and fix them on the underside of the eaves of a detached house or balcony, or on the underside of the overhanging part of the balcony or balcony of an apartment. The second positioning gauge is shown. It is explanatory drawing which shows the hanging position of each of the plurality of metal chains of the crow approach prevention tool shown in FIG. 2, the relative positional relationship with respect to the crow's nest, and the relative positional relationship between each metal chain. .. It is a figure which shows the embodiment which belongs to the present invention different from the present embodiment shown in FIGS. 2 and 3, and a larger number than the number of metal chains in FIGS. 2 and 3 is specified in the present invention. It is a perspective view which shows the state which hangs on the lower surface of the eaves of a detached house, the eaves of a veranda, and the lower surface of the overhanging part on the upper side of a balcony / veranda of a condominium in a predetermined relative positional relationship. It is a figure showing a further modification of the present invention different from FIG. 5, and is a diagram showing a further modification example of the present invention, in which a larger number of metal chains than in FIG. It is a perspective view which shows the state which hung on the lower surface of the eaves of the eaves and the lower surface of the overhanging part on the upper side of the balcony / veranda of the condominium.

Hereinafter, the configuration of the swallow's nest crow access prevention device 10 (hereinafter referred to as “swallow's nest crow access prevention device 10” or simply “crow access prevention device 10”) according to one embodiment of the present invention is shown in the drawings. I will explain in detail based on. FIG. 1 is a perspective view of a swallow's nest 30 made on the lower surface 51 of the eaves of a detached house or a balcony or the lower surface 51 of an overhanging portion 50 on the upper side of a balcony or balcony of an apartment, as viewed from the side of the building. Is.

Further, FIG. 2 is a perspective view showing a state in which the swallow's nest crow access prevention tool 10 according to the present embodiment is attached around the swallow's nest 30 shown in FIG. Further, FIG. 3 shows a plurality of metal chains 101, 102, 103, ... (100) constituting the balcony access prevention tool shown in FIG. 2, and the chains 101, 102, 103, .... Fixtures 201, 202, 203, ... (200) used to hang (100) on the lower surface 51 of the eaves of a detached house or balcony, or on the lower surface 51 of the overhanging portion 50 on the upper side of the balcony / balcony of an apartment. ), And the first positioning gauge 300 and the first positioning gauge 300 used when actually suspending and fixing these to the lower surface 51 of the eaves of a detached house or the balcony or the lower surface 51 of the overhanging portion 50 on the upper side of the balcony / balcony of the condominium. The positioning gauge 400 of 2 is shown.

Further, FIG. 4 shows the suspension positions of the plurality of metal chains 101, 102, 103, ... (100) of the crow approach preventive tool 10 shown in FIG. 2 and their relatives to the swallow's nest 30. It is explanatory drawing which shows the positional relationship and the relative positional relationship between chains 101, 102, 103, ... (100) made of each metal.

As described above, the swallow's nest crow access prevention device 10 according to the embodiment of the present invention is formed on the lower surface 51 of the eaves of the detached house or the balcony or the lower surface 51 of the overhanging portion 50 on the upper side of the balcony / veranda of the apartment. It is a swallow's nest crow access prevention tool that prevents the crow 90 from approaching the swallow's nest 30.

That is, the swallow 90 is prevented from approaching the swallow's nest 30 formed on the lower surface 51 of the eaves of the entrance of the detached house or the eaves of the veranda or the lower surface 51 of the overhanging portion 50 on the upper side of the balcony veranda of the apartment, and thereby the swallows. Preventing the crow 90 from approaching the swallow nest 30 in order to prevent the pre-hatched eggs and the chicks 22 of the swallow 20 after hatching in the nest 30 from being preyed on by the crow 90. It is characterized by.

The swallow's nest crow access prevention tool 10 according to the present embodiment is made of a plurality of metals having a first length equal to or greater than a length corresponding to at least the height from the head to the toes of the crow 90. Chains 101, 102, 103, ... (100) and the upper ends of these multiple metal chains 101, 102, 103, ... A plurality of metal chains 101, 102, 103, ... (100) are placed at predetermined positions around the swallow's nest 30 on the lower surface 51 of the overhanging portion 50 on the upper side of the balcony / veranda. It has fixtures 201, 202, 203, ... (200) for fixing in a state of being suspended from the balcony.

Further, the swallow's nest crow access prevention tool 10 according to the present embodiment has a first positioning gauge 300. As shown in FIGS. 2 and 3, the first positioning gauge 300 is located between each of the plurality of metal chains 101, 102, 103, ... (100) and the periphery of the swallow's nest 30. The eaves of the entrance or balcony of a detached house so that the horizontal distance is approximately longer than the distance from the beak to the tail of the parent bird 21 of the swallow 20 and shorter than the distance from the beak to the tail of the crow 90. Fixtures 201, 202, 203, ... To hang metal chains 101, 102, 103, ... It is intended to be used for positioning the mounting position of (200) on the lower surface 51.

Further, the swallow's nest crow access prevention tool 10 according to the present embodiment has a second positioning gauge 400. As shown in FIGS. 2 and 3, the second positioning gauge 400 has a plurality of metal chains 101, 102, 103, ... (100), which are adjacent to each other. The distance between (100) is such that the parent bird 21 of the swallow 20 goes in and out between the swallow's nest 30 and the hanging portions of the chains 101, 102, 103, ... (100) around it without hitting the wings. At the same time, when the crow 90 tries to approach the swallow's nest 30, at least one of the plurality of chains 101, 102, 103, ... (100) hits the wings of the crow 90 and exceeds the crow 90. A metal chain 101 from the lower surface 51 of the eaves of a detached house or veranda or the lower surface 51 of the upper overhanging portion 50 of the balcony veranda of an apartment so as to be a second interval to prevent access to the swallow's nest 30. , 102, 103, ... (100) is to be used for positioning the fixtures 201, 202, 203, ... (200) on the lower surface 51 to suspend (100).

According to the findings of the present inventor, the preferred lengths of the chains 101, 102, 103, ... (100) made of each metal are 50 cm, and the first positioning gauge 300 is the chains 101, 102 made of each metal. , 103, ... It is preferable that the distance between the mounting position of (100) and the portion of the swallow's nest 30 closest to the mounting position is 45 cm, and the second positioning gauge 400 has a standard length. It can be said that it is an example of preferable dimensions to have a standard length such that the distance between the attachment positions of the metal chains 101, 102, 103, ... (100) is 45 cm.

Each metal chain 101, 102, 103, ... (100) has a length of 50 cm, and the first positioning gauge 300 and the second positioning gauge 400 have a swallow nest 30 and a metal chain, respectively. The distance between 101, 102, 103, ... (100) and the adjacent metal chains 101, 102, 103, ... (100) should be 45 cm, respectively, at the entrance or veranda of a detached house. Swallows by fixing and attaching each metal chain 101, 102, 103, ... (100) to the lower surface 51 of the eaves and the lower surface 51 of the overhanging portion 50 on the upper side of the balcony / veranda of the apartment. The parent bird 21 of 20 can go in and out between the swallow's nest 30 and the hanging portion of the chains 101, 102, 103, ... (100) around it without hitting the wings, and the crow 90 in the swallow's nest 30. At least one of a plurality of metal chains 101, 102, 103, ... (100) hits the wings of the crow 90 and approaches the swallow's nest 30 beyond that of the crow 90. Was able to be demonstrated by the present inventor.

Further, since the lengths of the chains 101, 102, 103, ... (100) made of each metal have the above-mentioned lengths, the crow 90 can be vertically maintained while maintaining a specific position in the horizontal direction. You can't fly ascending so-called hovering.

Therefore, even if the crow 90 tries to approach the bird's nest 30 from the horizontal direction or the diagonal direction as described above, the blades of the crow 90 are formed of a plurality of metal chains 101, 102, 103, ... (100). I hit at least one and touch it. Then, the present inventor was able to demonstrate that the crow 90 cannot approach the swallow's nest 30 any more due to its characteristics.

As can be seen from the fact that the crow 90 is known as a bird with a very good memory among birds, the pre-hatched egg and the post-hatched egg in the swallow nest 30 that the crow 90 found and aimed at himself. Even if an attempt is made to capture the chick 22 of the swallow 20, as is clear from the above configuration, a part of the blade collides with the metal chains 101, 102, 103, ... (100), and instinctively. The danger and discomfort of the crow 90 itself will be accurately remembered together with the location information of the swallow's nest 30. As a result, it is possible to give up approaching this swallow's nest 30 again. This can effectively prevent the approach of the crow 90, which is extremely unpleasant for the resident, the call of the fellow crow 90, and the subsequent regular invasion of the crow 90.

Further, the parent bird 21 of the swallow 20 warms the egg firmly and surely incubates it by keeping the crow 90 away from the swallow's nest 30 in which the swallow's nest crow access prevention device 10 according to the present invention is installed around the swallow's nest 30. And can frequently come and go from the swallow's nest 30 to get food for the swallow 20's chick 22 while ensuring that the swallow 20's chick 22's predation from the crow 90 after hatching. The chicks 22 of the swallow 20 are regularly fed with sufficient food to support the growth of the chicks 22, and all the chicks 22 can be raised as young birds to ensure the subsequent fledging. Along with this, the resident does not have to worry about the unpleasant barking and approach of the crow 90, and does not have to worry about the eggs in the swallow's nest being preyed on by the crow 90. You can keep in mind that it will be warmed up and hatch safely, and you will continue to have a pleasant expectation that the eggs will hatch and the chick 22 of the swallow 20 will be born as a new life in the swallow's nest. be able to.

In addition, after the birth of the chick 22 of the swallow 20, only the chick 22 and the cry of the young chicken that grew after that are heard in the life without hearing the unpleasant crow 90's bark, until the swallow 20 fledges in the spring of the year. Since you can continue listening for a long time, you can have a cheerful and moist feeling with a sense of season in your daily monotonous life, and you will be able to enrich your daily life.

The present invention is not limited to the contents shown in the above-described embodiment. Specifically, it goes without saying that the shape, dimensions, and material of the chain, the fixture, the first positioning gauge, and the second positioning gauge can be appropriately changed as long as the effects of the present invention can be exhibited. ..

For example, the number of suspended metal chains and the suspended position are not limited as in the above-described embodiment, and the number and suspension of metal chains having a larger number as shown in FIGS. 5 and 6 are not limited. It may be a position. In addition, depending on the structure of the building, it is effective to use a smaller number because of the relationship with the nesting position of swallows.

Specifically, FIG. 5 is a diagram showing a mode belonging to the present invention different from the present embodiment shown in FIGS. 2 and 3, and is more than the number of metal chains in FIGS. 2 and 3. It is a perspective view which shows the state which a large number is hung on the lower surface of the entrance of a detached house or the eaves of a veranda, and the lower surface of the overhanging portion on the upper side of a balcony / veranda of a condominium in a predetermined relative positional relationship specified in the present invention.

Further, FIG. 6 is a diagram showing a further modification of the present invention, which is different from FIG. 5, and has a predetermined relative positional relationship in which a larger number of metal chains than in FIG. 5 is defined in the present invention. It is a perspective view showing a state of being suspended from the lower surface of the entrance of a detached house or the eaves of a veranda, or the lower surface of an overhanging portion on the balcony / veranda of an apartment. By implementing the present invention as such a form, it becomes possible to more effectively prevent the crow from approaching the swallow's nest.

In addition to this, the chain itself may be made of a material other than metal as long as it has sufficient weight in the suspended state. Further, if the fixing tool can be maintained in a fixed state by suspending a metal chain on the lower surface of the eaves or the lower surface of the overhanging portion on the upper side of the balcony / veranda, it is screwed as shown in the drawing of the present embodiment. The hook is not limited to the type of hook, and may be a hook that can be adhered to the lower surface with a strong adhesive or a hook that can be nailed to the lower surface.

Further, for the first positioning gauge and the second positioning gauge, for example, an adhesive tape whose one surface can be peeled off is attached, and when the fixture is attached to the lower surface, the gauge is pressed to the lower surface with one hand. Instead of attaching the fixative to the underside, it may be helpful to attach only the fixator to the exact location on the underside with both hands.

Further, as a metal chain, a chain having a wire diameter of 3 mm was used by the inventor of the present invention. In this way, by using a metal chain with a length of Lc = 50 cm and a width of Ld = 1.3 cm, the chain can be used at the entrance of a detached house or under the eaves of a balcony even under normal weather conditions where some wind is blowing. It is possible to maintain a state of being hung firmly from the lower surface of the overhanging part on the upper side of the balcony / veranda of the condominium, and even in such windy weather conditions, the effect of the present invention is fully exerted, and the crow Was found to be able to prevent them from approaching the swallow's nest.

However, as described above, it goes without saying that each component of the present invention is not limited to such a dimensional relationship as long as the effect of the present invention can be exerted. For example, depending on the relationship between the structure of the building and the nesting position, the present inventor can fully exert the effect of the present invention in the range of the first interval La = 30 cm to 70 cm and the second interval in the range of 30 cm to 70 cm. Confirmed. Similarly, the present inventor has confirmed that the effect of the present invention can be sufficiently exerted in the range of Lc = 30 cm to 100 cm for the chain length and Ld = 1 cm to 2 cm for the chain width.

10 Swallow's Nest Crow Approach Prevention Tool (Crow Approach Prevention Tool)
20 Swallow 21 Parent bird 22 Hina 30 Swallow's nest 50 Overhanging part 51 Bottom surface 90 Crow 101, 102, 103, ... (100) Chain 201, 202, 203, ... (200) Fixture 300 First positioning gauge 400 Second positioning gauge

Claims (3)

It is a bird's nest crow access prevention device that prevents crows from approaching the bird's nest made on the underside of the eaves of a detached house or the underside of the overhanging part on the balcony / veranda of an apartment.
A plurality of metal chains having a first length of at least the length corresponding to the height from the head to the toes of the crow, and
The upper end of the plurality of metal chains is the lower surface of the eaves of a detached house or the lower surface of the upper overhanging portion of the balcony / veranda of the condominium, and the plurality of metal chains are placed at predetermined positions around the bird's nest. Fixtures for fixing so as to hang from the lower surface, respectively,
The horizontal distance between each of the multiple metal chains and the perimeter of the swallow's nest is longer than the beak-to-tail distance of the swallow's parent bird and greater than the crow's beak-to-tail distance. A first positioning gauge used to position the mounting position of the fixture on the lower surface in order to suspend the metal chain from the lower surface so as to have a short first interval.
The distance between adjacent chains among the plurality of metal chains allows the parent bird of the swallow to enter and exit between the swallow's nest and the suspended portion of the chain around it without hitting the wings, and the above-mentioned When the crow tries to approach the swallow's nest, at least one of the plurality of chains should be a second interval to hit the crow's feather and prevent the crow from further approaching the swallow's nest. By having a second positioning gauge used to position the mounting position of the fixture on the lower surface in order to suspend the metal chain from the lower surface.
It prevents crows from approaching the swallow's nest created on the underside, which allows the crow to prey on pre-hatched eggs and post-hatched swallow chicks in the swallow's nest. A swallow's nest crow access prevention device that prevents crows from approaching the swallow's nest. The first interval is in the range of 30 cm to 70 cm, the second interval is in the range of 30 cm to 70 cm, and the length of the metal chain, which is the first length, is. The swallow's nest crow access prevention device according to claim 1, wherein the width of the metal chain is in the range of 30 cm to 100 cm, and the width of the metal chain is in the range of 1 cm to 2 cm. .. The length of each metal chain is determined so that the first length is 50 cm, and the first positioning gauge and the second are such that the first spacing and the second spacing are 45 cm. The swallow's nest crow access prevention device according to claim 2, wherein the length of the positioning gauge is defined.

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