Why do you believe this? Do you believe cats and other animals have no consciousness, so every behavior they exhibit is just instinct? Or do you believe they have some conscious behaviors, but killing birds is not one of them, this thing in particular is just an instinct?

For the first position, I think it is quite clear to anyone who studies and spends time with animals that they have something that is at least of the same kind as our consciousness. I just don't see how you can ascribe the wide gamut of complex, situatuonally and mood appropriate but still varied behaviors of animals to being purely instinct driven.

For the second position, I would like to see some study or some rationale behind it - especially since cats don't kill every bird they encounter, so if it's an instinct, it must still have some trigger, and hunger is not a viable explanation for most of the killings referenced here.

I just meant recreationally to mean "not out of necessity for survival". And I don't think conscious thought is relevant for this specific thread, I was just responding to the question of whether other animals besides humans can be needlessly violent.

The same can be said for humans. Where do thoughts come from?