COBirders,
There was a
Black-throated Sparrow at the NW side of Boulder Reservoir today. It was part of a large sparrow flock that included eight other species with the most common being Brewer's, but also Chipping, Clay-colored, Lark, Song, Vesper, Savannah and Lark Bunting.
The birds were foraging over a large area, but a good place to look is in the scrubby area just behind (west) of the ropes (great job OSMP!) that extend the fence to protect the NW mudflats from dogs and their owners.
The two Forster's Terns were present as well as a few Sage Thrashers.
Good birding,
Peter Burke, Niwot, CO