Secara historis, [[Plinius yang Tua]] percaya bahwa [[Burung layang-layang]] juga berhibernasi, dan seorang [[Ornitologi]] yang bernama [[Gilbert White]] menjelaskan bukti pada ''The Natural History of Selborne'' yang menunjukan banyak hal. Burung Pada umumnya tidak berhibernasi <!-- , instead utilizing [[torpor]]. -->. <!-- One known exception is the [[common poorwill]] (''Phalaenoptilus nuttallii''), first documented by [[Edmund Jaeger]]. --> Dengan satu pengecualian yang diketahui bahwa burung [[common poorwill]] (''Phalaenoptilus nuttallii''), yang didokumentasikan pertamakalinya oleh [[Edmund JaegerpoorwillHAIHHAIHAIHAIHAIHAIHAIHAIHAIHAIHAIJaeger]].<ref>{{cite journal|last=Jaeger|first=Edmund C.|authorlink=Edmund Jaeger|title=Further Observations on the Hibernation of the Poor-will|journal=[[The Condor (journal)|The Condor]]| date=May–June 1949 |volume=51|series=3|pages=105–109|jstor=1365104|quote=Earlier I gave an account (Condor, 50, 1948:45) of the behavior of a Poor-will (''Phalaenoptilus nuttallinii'') which I found in a state of profound torpidity in the winter of 1946-47 in the Chuckawalla Mountains of the Colorado Desert, California.}}</ref><ref>{{cite journal |last=McKechnie |first=Andrew W. |coauthors= Ashdown, Robert A. M., Christian, Murray B. & Brigham, R. Mark |title=Torpor in an African caprimulgid, the freckled nightjar ''Caprimulgus tristigma'' |journal=Journal of Avian Biology |volume=38 |pages=261–266 |url=http://web.wits.ac.za/NR/rdonlyres/3ED778A4-2CAF-450B-985D-C8B7E1EEDA92/0/FRNJtorporJAB.pdf |doi=10.1111/j.2007.0908-8857.04116.x |issue=3}}</ref>
