Sorry, not (directly) bird related...
Does anyone know what type of insect forms the smooth skinned, lumpy fruit-like galls that develop on leaves of the female staghorn sumacs? I do not (yet) have a photo of them, but this is the first year our sumacs have had these. They are quite attractive, and to the unsuspecting eye, one might be convinced they were indeed some sort of seed-bearing fruit. They seem to cause the leaves to wither and lose the chlorophyll prematurely, hence the affected leaves and galls are turning scarlet red. They almost look like a small lumpy pear, almost like a miniature deformed sickle pear...
Incidentally, they are filled with perhaps dozens (100?) of miniscule, fuzz/powder-coated squiggling larva.