Sparrows find it difficult to fly up at a steep angle to the nest, but martins do so easily. Conflict with sparrows Sparrows can be discouraged by placing a curtain of weighted strings in front of the nest. While house martins are rarely affected by predation, house sparrows frequently damage or take over nests and attack adults, eggs and young. The house sparrow, Passer domesticus, is one of the most familiar, widespread birds in the world.The problem is, house sparrows are also invasive birds that disrupt other bird species in many areas. Many birders prefer to discourage house sparrows in order to attract a more diverse range of birds in their yard and to protect other species threatened by house sparrows’ aggression.
2020 house sparrows fighting