No, not birds (although I am a birder). These are my checklists for things I want to do, books I want to read, and a record of physical objects I want to remember but don’t want to physically own any more. I may eventually split up my Do! and Read! lists, as they are both getting uncomfortably long.
De-Clutter! (needs to be longer–still have waaaay too much stuff!)
Do! (aka Bucket List)
Read! (my To Be Read pile)