Ruby-throated vs. Black-chinned Hummingbird: Glitter Wars Field MarkRuby-throated HummingbirdBlack-chinned HummingbirdGorget (Throat Patch)Iridescent ruby red (males only), looks black in poor...
Feathered doppelgängers
Downy vs. Hairy Woodpecker: A Tale of Two Beaks Field MarkDowny WoodpeckerHairy WoodpeckerSizeSmaller (about 6.5 inches)Larger (about 9.25 inches)BillShort, dainty...
Double-crested vs. Neotropic Cormorant: The Battle of the Blackwater Birds Field MarkDouble-crested CormorantNeotropic CormorantSizeLarger (about 33 inches long)Smaller (about 25...
Feathered doppelgängers. Cooper’s Hawk vs. Sharp-shinned Hawk: Spot the Sneaky Look-alikes Field MarkCooper’s HawkSharp-shinned HawkSizeBigger (crow-sized), 14–20 inSmaller (jay-sized), 9–13...