...This rule, however,has many exceptions, for one will often find closelyrelated species which differ in the stage of hibernation... 
Clarence M. Weed 「Butterflies Worth Knowing」
...Notwithstanding all the attention which has been paidto butterfly life-histories there is still some uncertainty inregard to the hibernation of many of our species...
Clarence M. Weed 「Butterflies Worth Knowing」
...Farther south there are probably three broods a yearand hibernation may take place in various stages...
Clarence M. Weed 「Butterflies Worth Knowing」
...These eggs shortly hatch intocaterpillars that go directly into hibernation, taking nofood before winter sets in...
Clarence M. Weed 「Butterflies Worth Knowing」
...Then they become lethargic, ceasing to feedand to all appearances going into hibernation...
Clarence M. Weed 「Butterflies Worth Knowing」
...The adult butterflies, more or less worn and faded fromtheir long hibernation, appear in fields and pastures inMay...
Clarence M. Weed 「Butterflies Worth Knowing」
...According to Neill (1947:204), the cottonmouth tolerates lower temperatures than do most snakes in Georgia and is one of the last to go into hibernation...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...:38) findings, the young probably feed before hibernation because they grow substantially in winter...
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...Dig one out during hibernation (Audubon did so), and you find it a mere inanimate ball, that suffers itself to be moved and rolled about without showing signs of awakening...
John Burroughs 「Birds and Bees, Sharp Eyes and, Other Papers」
...Hypnody: lethargy; a condition similar to or identicalwith hibernation...
John. B. Smith 「Explanation of Terms Used in Entomology」
...The pupa stage is easily affected by temperaturechanges and may be prolonged during hibernation for as long as 4or 5 months...
L. O. Howard and F. C. Bishopp 「The House Fly and How to Suppress It」
...ornata isa burrower, at least for purposes of hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Few individuals retainedthe caruncle when they entered hibernation late in November, and noneretained it upon emergence from hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The anterior edges of carapaceand plastron, and the slightly elevated middorsal line () wearsmooth in some individuals before the first period of hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...ornata under my observationhad already begun permanent hibernation but a few at theReservation were still semiactive...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Low air temperature probably is the primary stimulus for hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Turtles burrow upward at the end of hibernation and remain justbelow the surface for a week or two before emerging...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...A fairly complete hibernation such as we supposethey undergo has been reported by Szymanski (1914) for Salamandraon the basis of kymographic records of movement...
Richard F. Johnston 「Natural History of the Salamander, Aneides hardii」
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