Another 'cats kill birds' video. Do some cats kill birds? Undoubtedly - some birds kill birds too. The problem I think is that many people don't really understand how TNR works - it's not abandonment. It's not that the cats could then be 'rehomed'. They either live on the streets or they die.
As for the question of predation, honestly, most cats are pretty clumsy. the numbers that are thrown around - millions of birds killed - have never been substantiated. If they are such efficient killers, then why aren't we getting bird carcasses every day from the cats we care for?
I love birds - and have feeders out for them too, and I've never seen my neighbor's cats even get close to nabbing a bird.