Anyway, here you go (from Nature, not mv-voice) https://www.nature.com/articles/ncomms2380
> free-ranging domestic cats kill 1.3–4.0 billion birds and 6.3–22.3 billion mammals annually. Un-owned cats, as opposed to owned pets, cause the majority of this mortality. Our findings suggest that free-ranging cats cause substantially greater wildlife mortality than previously thought and are likely the single greatest source of anthropogenic mortality for US birds and mammals
Please read these points carefully:
1. While cats, in general, are a threat to birds, the cats managed by the TNR program on Google Campus were not a threat to burrowing owls in the Shoreline park;
2. Shutdown of the TNR program resulted in the increase of the feral cat population, and had no positive impact on the owls;
3. The primary threat to the burrowing owls is human interference and destruction of habitat. These birds are not particularly threatened by stray cats in the first place.
4. Saying that the general statement applies to a particular case without looking at the facts is a fallacy.
TL;DR: "cats are a threat to birds" doesn't imply that my house cat in the US is a threat to kiwis in New Zealand.
I have provided extensive references for everything I said. Please read them before typing out your gut response.
While cats, in general, are a threat to birds, these particular cats were not a threat to these particular birds.