One of the many waves of migratory birds that has arrived in the Twin Cities area in the past couple of weeks was Robins — a bonanza of Robins — a “robinnanza”. These are not your usual noisy, chattery backyard robins; they are instead secretive, quiet, stealthy birds that fly silently through the forest and gang up together for bathing in small forest streams.
Previously, I wrote a post querying why readers thought Robins bathed so much, and one reader suggested it was because they dig around in the dirty leaves so much. Indeed, there was an ample display of that behavior near the stream bank, where Robins were furiously poking into and throwing leaves up in the air as they explored what lay beneath.
I poked at a few leaves myself, and found some spiders and mealy bugs crawling around under them, so no wonder the Robins have congregated in this rich hunting ground near a lovely bathing spot.