https://phys.org/news/2018-05-airport-dwelling-magpies-planes-good-bad.html

Every day, throughout the world, flying animals (birds and, to a much lesser extent, bats) collide with aircraft. Many such collisions are minor and often go unnoticed. But they can be scary and damaging. In the worst cases, aircraft have lost power and crashed, causing catastrophic damage and loss of life.

Most bird-aircraft collisions occur at low altitudes, where birds and planes share common airspace. At these altitudes, pilots have limited options for aircraft recovery. Moreover, the smaller the aircraft and the fewer the engines, the greater the chance of substantial damage should a strike occur.