...The bear will also den up or go into hibernation much quicker if they get fat, than they will if shack is a little scarce so that they do not get quite so fleshy... 
Eldred Nathaniel Woodcock 「Fifty Years a Hunter and Trapper」
...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」
...The conditions as to hibernation by the larvae of butterfliesare very different from those of the egg...
Clarence M. Weed 「Butterflies Worth Knowing」
...Yet another point of viewwould be that of hibernation, the making of a collectionof all butterflies that hibernate as adults...
Clarence M. Weed 「Butterflies Worth Knowing」
...The Compton Tortoise butterflies which are thus abroadin early spring have been in hibernation since October...
Clarence M. Weed 「Butterflies Worth Knowing」
...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」
...The Lepidoptera afford examples of hibernation in all stages of thelife-history...
Geo. H. Carpenter 「The Life-Story of Insects」
...They remainlarge from early September until hibernation is begun, becomingonly slightly smaller in late September and October...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Possibly some spermiogenesis takes place inthe early phases of hibernation or in the period in late autumnwhen turtles are intermittently active...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
..." Minor growth-rings result from temporary cessationsof growth that occur in the course of the growing season, notat the onset of hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Under favorableconditions hatchlings would be able to feed and grow eight weeksor more before hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The range of body temperaturesin this group is greater than in the other groups shown in because low body temperatures were studied over a widerange of conditions, including hibernation...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...Emergence from hibernation usually occurs in April but in someyears a few turtles may emerge as early as the first week of March...
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」
...Young thought tobe those recently emerged from their first hibernation were those inthe size group 15...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
...Near the date of the first autumn frost the frogsdisappear from the soil surface and from their usual shelters nearthe surface, presumably having retired into hibernation in deepholes and crevices...
Henry S. Fitch 「Field Study of Kansas Ant-Eating Frog」
...Itseems a more intense form of hibernation than thatof our squirrel and dormouse...
Elizabeth Brightwen 「Wild Nature Won By Kindness」
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