GPW wrote
most (birds) are very good at avoiding vehicles
Most, yes, however, I let the wife drag me to an Audubon Society event where they gave talks about birds of prey (hunters…falcons, eagles, hawks and owls). they had several rescued live birds that they walked out into the seated crowd with. It was quite fascinating to get to see them up close.
Well, the thing is that there are actually a disproportionate number of these birds of prey that are getting hit by vehicles. It seems that their habitat (at least here on the heavily populated east coast) is shrinking leaving the roadways as a big portion of the open ground where they can hunt. Combine this with the higher rate of small ground animals that are attracted to the roadways due to the food waste and trash that people throw from their cars, and the odds start to stack up against the birds. They become singularly focused on that little mouse there by the side of the road eating that apple core (the one that you thought was perfectly fine to throw out, because it was biodegradable, and therefore not littering, and you were doing the squirrels and their friends a favor by feeding them). As the birds swoop down in their state of tunnel vision they don’t notice that car or truck bearing down on them, and, wham! The ones that survive are usually blinded on the side that they were hit, so they cannot be released back into the wild because their depth perception is compromised and they are unable to effectively hunt for themselves. Owls are especially susceptible because they are adapted to night hunting; their eyes and eye sockets are so big and located at the tops of their skulls that it leaves the bridge of bone at their brow very fragile (at least compared to a barreling automobile).
Beautiful birds, I would have to say awe inspiring. After learning this, the wife and I have never thrown another scrap of food from our cars.
Eagle, wild turkeys fly just fine. Although they tend to stay near the ground, they’re quite capable of flying up into trees (where they roost for the night) or onto my neighbors roof. It’s the domestic farm raised turkeys that don’t fly (the white ones). Not sure if this is because they clip their wing feathers, or are just bred that way.