Omg I've come across 'queer ecology' as a thing and it sounds like the biggest load of bollocks ever, for several reasons:
It's projecting an anthropomorphised idea of human relationships into animals and trying to label them as 'queer' when they then don't fit that human 'norm' - when they're being completely normal for them.
Virtually all animals have sex to reproduce. That's it. So trying to map human ideas of relationships and the variety thereof onto them makes no sense.
'Normal' has a specific, mathematical meaning when describing a population, it's not pejorative, it just describes a dataset where most cluster around the middle. Most animals do x or y thing, it's normal. Some don't. This is interesting. It's not 'queer'.
Ffs.