Under what circumstances do swallows abandon their nests?

Swallows will choose the following ways to abandon their nests: insufficient food supply, frequent interruptions, bad weather, failed reproduction and threats from natural enemies.

1, food supply is insufficient.

Swallows feed mainly on small insects in the air. If there is a problem in the food supply around the place where swallows nest and the number of insects is insufficient, it will directly affect the foraging and brooding of swallows. In this case, the swallow will choose to abandon the nest and find a place with more food to rebuild it.

2. Often disturbed

Swallows are very sensitive during nesting and brooding. If you are often disturbed and harassed by the outside world at this time, the swallows will feel that this place is unsafe and it is difficult to nest normally, so they will choose to abandon their nests. People who approach the nest too frequently during the breeding period of swallows will increase the possibility of abandoning the nest.

3. The weather is bad

If the places where swallows choose to nest often have bad weather such as strong winds and heavy rains, it will seriously threaten the survival of swallows' chicks and affect their normal foraging and brooding behavior. At this time, swallows will also consider abandoning their nests and moving to areas with milder weather.

4. Reproductive failure

If the breeding behavior of swallows in the same nest fails several times in a row, and the chicks die or fail to hatch, swallows will think that this nest is not suitable for living and breeding, so they choose to abandon the nest and find a more suitable place to build a new nest.

5, the threat of natural enemies

If there are signs of the activities of their natural enemies such as snakes and cats around the bird's nest, it will seriously threaten the survival and safety of the swallows themselves and their larvae. In order to avoid the attack of natural enemies and ensure the safety of the population, swallows will also consider abandoning their nests and transferring.