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Family XX.--Vireoninae. Greenlets


Family XX.--Vireoninae. Greenlets


The definitive website on wildbirds & nature



Birds of America

By John James Audubon, F. R. SS. L. & E.

VOLUME IV.

Back TOC Forward

FAMILY XX.--VIREONINAE. GREENLETS.

Bill of moderate length, straight, rather stout, compressed toward the end; gap-line slightly arched, notches distinct, tip very small, declinate. Head rather large, ovate; neck short; body rather slender. Feet of moderate length; tarsus compressed, slender, with seven anterior scutella; toes rather small, hind toe rather stout, lateral equal. Claws moderate, arched, compressed, acute. Plumage soft and blended. Wings of moderate length, rather pointed. Tail of moderate length, even or emarginate. Roof of upper mandible concave, with a median ridge; tongue narrow, flat above, with the point slit; oesophagus of moderate length, without dilatation; stomach roundish, muscular, with a dense rugous epithelium; intestine short, and rather wide; coeca very small. Trachea simple, with four pairs of inferior laryngeal muscles.




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