Mainly active during the day green tree snakes eat frogs skinks geckos lizards reptile eggs small mammals stranded tadpoles and fish and even the occasional water skink if they can catch them. They are well known to bite when someone or something provokes them.

Green Tree Frog Devours Venomous Orange Naped Snake In Food Chain
Theyre arboreal predators meaning that they sit ready to ambush prey on a tree branch.