heron Ardea herodias and some black terns? Chlidonias niger . Orioles Icterus bullockii are more common in the villages like Berthoud Bertoud, Colorado than at Boulder Boulder, Colorado . Lark sparrows Chondestes grammacus abundant in foothills, vesper sparrows Pooecetes gramineus not so abundant. Started for gulch west of town at 7:15.