Jack Dykinga / Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.

Jack Dykinga / Murmuration of Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) at sunset, before roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.

Marie Read / Red-winged Blackbird (Agelaius phoeniceus) male displaying in cattail marsh, Viera Wetlands, Brevard County, Florida, USA, January.

Marie Read / Baltimore oriole (Icterus galbula) male perched in pear (Pyrus sp.) blossom, eastern redbud in background, New York, USA. May.

Gerrit Vyn / Red-winged blackbirds (Agelaius phoeniceus) in flight. Lower Klamath National Wildlife Refuge, Siskiyou County, California, USA. December.

Marie Read / Baltimore oriole (Icterus galbula) male singing in spring, perched on Pear blossom (Pyrus sp.) flowers, New York, USA May.

Jack Dykinga / Murmuration of Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) before roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.

Jack Dykinga / Yellow-headed blackbirds (Xanthocephalus xanthocephalus) roosting in cattails Whitewater Draw Wildlife Area, Arizona, USA, December.

Jack Dykinga / Yellow-headed blackbirds (Xanthocephalus xanthocephalus) roosting in cattails Whitewater Draw Wildlife Area, Arizona, USA, December.

Marie Read / Baltimore oriole (Icterus galbula) first year female perched with newly-emerged leaves in spring, New York, USA, May.

Marie Read / Red-winged blackbird (Agelaius phoeniceus) male calling and displaying, backlit, showing steamy breath on a chilly spring morning, Ithaca, New York, USA, April.

Marie Read / Red-winged Blackbird (Agelaius phoeniceus) male displaying in cattail marsh, backlighting, Ithaca, New York, USA, April.