Karine Aigner / Portrait of a Blue-headed vireo, (Vireo solitarius) with white background, Block island, Rhode Island, USA. Bird caught during scientific research.

Scott Leslie / Blue-headed Vireo (Vireo solitarius) male calling, Maine

Alan Murphy / Blue-headed Vireo (Vireo solitarius) male, Texas

Alan Murphy / Blue-headed Vireo (Vireo solitarius) male, Texas

Alan Murphy / Blue-headed Vireo (Vireo solitarius), Texas

Alan Murphy / Blue-headed Vireo (Vireo solitarius), Texas

Glenn Bartley / Blue-headed Vireo (Vireo solitarius), Newfoundland, Canada

Barry Mansell / Solitary Vireo / Blue Headed Vireo (Vireo solitarius) perched, High Island, Texas, USA, April

Marie Read / Male Blue-headed / Solitary vireo (Vireo solitarius) in breeding plumage singing, New York, USA, May

Scott Leslie / Blue-headed Vireo (Vireo solitarius), Nova Scotia, Canada

Gerrit Vyn / Blue-headed / Solitary Vireo (Vireo solitaruis) perched on a branch, Tompkins County, New York, USA, May.

Tom Vezo / Blue-headed Vireo (Vireo solitarius) portrait, Rio Grande Valley, Texas