Hirundinidae definitions

Hirundinidae

1) Bird family 2) Family hirundinidae 3) Swallows and martins
Found on https://www.crosswordclues.com/clue/hirundinidae

Hirundinidae

songbird family, order Passeriformes, consisting of swallows and martins, 74 species of small, streamlined birds, noted for their strong and nimble ...
Found on http://www.britannica.com/eb/a-z/h/53

Hirundinidae is the Swallow family of Fissirostal birds. They are characterized by broad beaks, opening almost to the eyes, small, weak feet, and a long, forked tail. The wings are long and powerful, adapted for sustaining a protracted flight in pursuit of winged insects which form their sole source of food. They are migratory birds, spending the s...
Found on http://www.probertencyclopaedia.com/browse/BH.HTM