The only birds he cares about are the ones in his KFC bucket. He hates windmills because they fucked up his ocean view:

https://www.thedailybeast.com/trump-hates-windmills-and-it-has-nothing-to-do-with-his-bogus-cancer-claims

Yes, they eat birds. How much, how damaging, how they compare with the same energy amount of fossil fuels, etc are actually valid discussion points.

But when Trump spews a bunch of lies and occasionally tells a snippet of truth about a subject, you will focus on that tiny moment of truth and use it as an argument point, ignoring all the bullshit. You rarely see the wider picture, choosing instead to tweak people.