2022 Bird Lists Spring Migration 2022 Bird Walk Dates: May 3, 10, 17, 24, 31 June 7. Reservations required, please call 576-2016 Ext 6 to reserve your spot. Helpful web-site to ID birds: Colorado Field Ornithologists The Cornell Lab of Ornithology Photos by Barry Cooper: Chipping Sparrow Blue-gray Gnatcatcher sitting on it’s nest. Female Red Crossbill