Bird Collision (other)
Bird collision may refer to: * Bird–skyscraper collisions * Towerkill: due to antenna towers and masts * Bird strike A bird strike—sometimes called birdstrike, bird ingestion (for an engine), bird hit, or bird aircraft strike hazard (BASH)—is a collision between an airborne animal (usually a bird or bat) and a moving vehicle, usually an aircraft. The term ...

Towerkill
Towerkill is a phenomenon in which birds are killed by collisions with antenna towers. In poor visibility, birds may simply fly into the guy-wires. But night illuminations around the towers can also disrupt migration patterns, with disoriented birds colliding with the structure. Research indicates that blinking lights can reduce deaths without diminishing visibility by aircraft. Overview In the United States, the US Fish and Wildlife Service estimates that between 4 and 50 million birds are killed each year by tower kill. The effect on overall bird populations by towerkill may be small, but the phenomenon is of considerable concern to ornithologists, because many endangered bird species are being killed, and because so many birds are killed in such a small area of land. In at least one instance, several thousand birds were killed at a single tower in one night. Additionally, the unnatural lights on communication towers disrupt bird migration patterns in ways that are still not ful ...
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