Rule34.GG

Regular anthro
avian
balls
bird
black body
black feathers
bodily fluids
branch
claws
corvid
corvus (genus)
erection
feathers
genital fluids
genitals
grey body
grey feathers
gripping penis
hand on penis
hi res
male
masturbation
nude
oscine
outside
passerine
peeing
penis
plant
purple eyes
raven
sitting on tree branch
solo
spread wings
toe claws
tree
urine
urine stream
watching from afar
watersports
white body
white feathers
wings
zephyrpanthur