The Probert Encyclopaedia of Nature

FALCONINAE

The Falconinae are the Merlin, Hobby and Kestril sub-family of the Falconidae family of birds. They are characterised by a short, strong beak curved from the base. The upper mandible is strongly toothed, the lower notched. The nostrils are round. The tarsi is short and strong. The wings are long and pointed, with the second primary longest, the first and third equal in length and having the inner web notched near the extremity.
Research Falconinae