Yellow-bellied sap-sucker

From Toadwater Guide

A bird that lives in a birdhouse on a Yellow buckeye tree. Once in your inventory (see Birds), you can place the sucker on the ground (select the sucker then select a square next to yourself). Doing this will collect all the sap from every tree in your viewable area which has a tree tap attached to it -- any sap will move into your inventory. Also it will fly out of your inventory immediately (and back to its home birdhouse if it has at least one more use).

If the sucker is not used within 10 minutes, it will fly out of your inventory (and back to its home birdhouse if it has at least one more use).