rule 34 2019 ambient bird ambiguous gender ambiguous species anthro antlers anus artist logo avian balls bird black hooves blue sky brown body brown fur brown hair dated deer erection forest fur genitals green eyes group hair hi res hooves horn humanoid genitalia humanoid penis logo looking at viewer looking through looking through legs male male only mammal nude outside penis perineum pink penis plant riorix short hair silhouette sky solo focus spread legs spreading tan balls tan body tan fur tan perineum tree white antlers 7226794