Not with dippers, but with Robins and Bluebirds.
Watched over a dozen Robins and over a dozen Western Bluebirds walking
over cobbles and boulders in the river, furiously pecking up something
(midges?) from the rocks. With them, a few Mt Bluebirds, a Yellow-rumped,
a Vesper Sparrow, and (briefly) a Grackle.
Last night went down again to 15 near Crown Hill in Lakewood. Wonder how
many birds didn't make it. Or if they all made it, how in heck do they do it?