Lost small green tree frog named Hopper in the Hudson Valley backyard near the river.

I lost my green tree frog named Hopper when I took him out for some sun in my backyard. He must have jumped away while I was distracted. I live in the Hudson Valley area, near the river, so if anyone has seen a little green frog hopping around nearby, please let me know! He's small, about the size of a coin, and very friendly.