It's bizarre to me that harcore vegans want to own a pet to begin with. Keeping bees for honey is bad, but separating a kitten from its mother at an early age and castrating it for your convenience and deciding how they live (restricted to an apartment or not) is totally fine?
I understand that most pets live a good life, but man, I can't bring myself to make choices like these. I mean there are ways to circumvent it (get an older cat from an asylum for example) but it doesn't really remove the "pet dilemma" to me.
I think one of the problems is that you basically can't keep many roosters together (I'm not even sure you can keep two roosters together). That means that for a sanctuary you need huge space so that the roosters don't kill each other. So while I also buy eggs that guarantee that the male chicks will be raised, I wonder how this is supposed to work if I pay only like 50 cents per egg and half of the hatched eggs are male.
(Note that my knowledge on rooster farming comes from a German or possibly German-French documentary on that, so I might be talking out of my ass here.)
(I think I just remember that 2€/egg was the price calculated in the documentary for ethical farming without losses for the farmers. This was some years ago. To be fair - I'd totally pay that for an egg. Egg as an ingredient can be easily substituted and as a standalone dish it can be something special that I'm willing to pay for. )