8ball
Decolonise colons!
I've read plenty of ethics (altho it's a while ago now), also specifically on animal rights. What I'm trying to point out here is that you (and many others, I'm not trying to single you out) has a belief that there is something unique about all humans that means that by virtue of this difference humans must treat each other differently than we treat animals. The difficulty with that line of argument is that it runs into trouble when we come to marginal cases - i.e. humans that don't seem to possess this virtue (whether that be ethical reasoning, language, rationality, autonomy etc etc). What then?
That's a good point to make regarding speciesism, and has been addressed on this thread to some degree already. That doesn't mean the term 'murder' applies to choking a chicken <cough> for your dinner, though. Not by quite an immensely, unimaginably long shot.