The swallows are recognized by their long, pointed wings, forked tail and excessively short tarsi. (Figuier,…
"As he skims along close to the ground or the water, quick as thought he catches any unlucky fly that…
The swallows are recognized by their long, pointed wings, forked tail and excessively short tarsi. (Figuier,…
The Swallows are recognized by their long, pointed wings, forked tail and excessively short tarsi. (Figuier,…
Swifts are related to swallows. The Swallows are recognized by their long, pointed wings, forked tail…
"The coloration of the twenty or more species of Cypselus is sooty-black or mouse-brown, frequently…
This swift prefers to build its nest under the eaves of houses, in holes around steeples, in old towers,…