Aerial (top) view of Barn Swallow's bill "Hirundo horreorum. Barn Swallow. Bill of moderate size for…
Side view of the Barn Swallow's claw. "Hirundo horreorum. Barn Swallow. Tarsi shorter than middle toe…
"Hirundo rustica, the Swallow, is metallic black, with a variable amount of chestnut or rufous on the…
"Fig 181 - Generic details of Hirundo horreorum(Barn Swallow) Deep lustrous steel-blue; forehead and…
"Hirundo horreorum. Barn Swallow. Tail deeply fornicate, nearly or about as long as the wings; lateral…