Pigeons have been congregating on Common Hackberry branches barely strong enough to hold them.
They are plucking off and eating the Nipplegalls created by Pachypsylla celtidismamma psyllids.
Pigeons In The Trees
Starting out from Brooklyn, an amateur naturalist explores our world.
As John Burroughs said, “The place to observe nature is where you are.”
Backyard and Beyond 
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