PDF) Genetic signatures of intermediate divergence: Population history of Old and New World Holarctic ravens (Corvus corax)
American crow or common raven? I thought crow but the tail shape in flight has me questioning. I know we have ravens here as I've heard their calls and see them from
List of birds of Ireland - Wikipedia
Common Raven and American Crow Identification - NatureMapping
Common Raven (Corvus corax)
The Project Gutenberg eBook of What Bird Is That?, by Frank M. Chapman.
Maryland Biodiversity Project - Common Raven (Corvus corax)
Orioles & Ravens Baltimore ravens football, Baltimore ravens logo, Ravens football
The Project Gutenberg eBook of Bird Neighbors, by Neltje Blanchan.
Bird nests and construction behaviour by Martha Piña - Issuu
Common Raven or Northern Raven (corvus corax)
Maryland Biodiversity Project - Common Raven (Corvus corax)