Thatch and Annabelle are chasing each other this morning, so I think she's finally getting back to normal. Yesterday, before our DR ChasSmith arrived, she was in heaven: we had four pigeons clamoring around our homemade bird feeder.
I got a baking sheet last Friday, put it on the fire escape, weighed it down with hand weights, and every morning I put a half cup of bird seed and dried bread slices into it. We didn't start using it until 2-3 days ago because Annabelle was not into watching birds while she was sick.