You've got to be incredibly concerned about feral domesticated cats and window collisions, which kill 1,000-10,000 times more birds annually (on the upper end between the two orders of magnitude) between them.
https://www.ted.com/talks/michael_shellenberger_why_renewabl...
Basically, cats kills sparrows and other small and extremely prolific urban birds. Those birds aren't what wind turbines threaten. Wind turbines threaten larger prey birds like owls, eagles, falcons, etc.
This isn't an ideal situation, but you can't talk about this sensibly without the background that we are in a planetary climate emergency and this is one route to try to fix a bigger problem. All current life on Earth is headed somewhere bad unless human beings can alter the course of atmospheric CO2. That would be a worse outcome for large birds than more wind farms.
If someone wants to concurrently pursue nuclear or solar, by all means they should do so. Shellenberger is a controversial figure, and there is a reason for it.
You don't get to lead with "meh the birds are not a big deal, they're mostly common ones" and then when challenged, pivot to "so what if it's endangered predatory birds? We're in an emergency here!"