[jacquesm]

Apartment buildings kill birds because they fly into them.

http://www.abcbirds.org/abcprograms/policy/collisions/glass....

If you place non-natural objects into the path of creatures that are (just like many humans) unable to appreciate the dangers of those objects then carnage will ensue.

It's almost impossible to do anything on a large scale without affecting flora and fauna in some way, the mental image generated by 'birds bursting into flames' is quite gruesome (which I suppose was the intention). But it's not that much different than radar installations, large scale deforestation and building houses in its eventual result.