To answer your question, “What precautions are taken to avoid bird strikes?” Pilots try to avoid birds and areas with high amounts of bird activity as much as possible. We don’t want to strike birds. They damage aircraft and risk human lives. Aviation wether reports, notices to airmen, airfield surface observation radio reports, chart supplements, and other information dissemination resources will note when bird activity is likely at airfields. When a pilot unintentionally hits a bird, there are no civil or criminal penalties in the US as long as the pilot was following acceptable airmanship practices. No aircraft mass produced at this time are designed with the safety of birds in mind. They are designed with the safety of humans in mind. Many organizations like the NTSB will track aviation incidents like animal encounters.
While I can appreciate your opinion and concern for this subject, and applaud your trying to start a dialogue to raise awareness of the issue, it strikes me as misplaced.
I am a pilot who lives next to a nature preserve. I can see first hand the circle of life happen everyday outside of my window. I see a similar circle of life happen at my local Class D airport of similar size. Airplanes contribute a disproportionately small impact on the total number of avian deaths. Nature kills far more birds in the nearby nature preserve than the random aircraft birdstrike.
My local Class D airport is a rather busy airport for its Class and size. Yet, we only see one or two bird strikes a month during some seasons and one a week during other, high bird activity, seasons. Compare this to the multiple birds per day being killed in the local nature preserve of similar size. These deaths are caused by domestic cats, feral cats, bobcats, foxes, lucky coyotes, snakes, snapping turtles, hawks, owls, and other predatory birds and animals. There is even a type of bird who destroys the eggs of other birds. Then, they lays their own eggs in other birds nests for the nest owners to raise. Considering the much larger number of bird deaths being caused by other animals, is there no concern for their death on your part? Especially those killed by domestic cats. These little murderers can kill several birds a day for sport and not for food or survival.
I can not put an exact number on how many birds are killed by other animals. But, a quick internet search will bring up how many birds are killed by man through food production and hunting alone. These numbers are reaching 100 billion birds a year. This makes the 65 thousand in a 3 year period killed in impacts with aircraft pale in comparison. This does not even take into account the birds killed due to the destruction of their habitats by encroaching human settlement.
You are trying to solve a very, very small part of a much larger problem. Your question might as well be what precautions are being taken to avoid innocent birds from being eaten by humans and other animals.