Webster's Revised Unabridged Dictionary · 1913

Fork-tailed

Fork-tailed , adjective

(Zoology) Having the outer tail feathers longer than the median ones; swallow-tailed; -- said of many birds.
Collocations (3)
Fork-tailed flycatcher (Zoology) , a tropical American flycatcher (Milvulus tyrannus).
Fork-tailed gull (Zoology) , a gull of the genus Xema, of two species, esp. X. Sabinii of the Arctic Ocean.
Fork-tailed kite (Zoology) , a graceful American kite (Elanoides forficatus); -- called also swallow-tailed kite.