They have an unenviable time of it,--feasting in the summer and fall, hibernating in winter, and starving in spring.
The mouse continued hibernating at intervals till May.
One of the females died in October, but the other lived and began hibernating early in November.
In the rock ledge situations where skinks were studied, excavation for the purpose of finding hibernating individuals was not practical.
On only a few occasions have natural hibernating sites or the dormant skinks in them been observed by zoologists.
In both logs the skinks were accompanied by hibernating anoles (Anolis carolinensis).
Hibernating skinks of this species were found singly or in pairs.
This question now arises, which of the existing generations was formerly the hibernating one--the first or the last?
Thus, in the case of hibernating species, the colour which is adaptive to the autumnal colours of the foliage of their food-trees would not assimilate to that of the newly-opened leaves in the spring.
Thus the first generation of Marcia from the hibernating larvæ furnishes a second generation of Tharos.
And almost always some of the chrysalides, after having been iced, go over the winter, and then produce Telamonides, as do the hibernating pupæ in their natural state.
Both mice were dormant, covered by nesting materials and curled up in the aforementioned hibernating posture.
With the additional weight they were more listless and drowsy, often spending days curled up in the hibernating position with the head between the hind legs and the long tail curled completely over the head and body.
In Minnesota, jumping mice emerged late compared to other hibernating rodents.
This in itself is not harmful, as shown by the truehibernating animal (e.
Experiments with the ground squirrel, a typical hibernator, show that the artificially cooled ground squirrel does not tolerate such long periods of low body temperature as does a naturally hibernating animal.
Other studies of the brown adipose tissue (fat), which is present in most hibernating mammals, show it to be essential to hibernation.
The old yarn of hibernating folks," the Scotsman said, his eyes alight with tolerant amusement.
It's the key to the hibernating yarn," Steve said.
No wonder, then, that subsequently his manner towards an occasional hibernating wasp among the moss-roots in the gravel-pit was deferential in the extreme!
With a hibernating period of from 5 to 7 months, however, it is not difficult to realize the problems this ground squirrel must face.
This indicates that, like most of the hibernating bats, breeding takes place in one season, but the fertilized ova remain quiescent and do not begin to develop until conditions are propitious for the birth of the young.
More decisive, because surer, is the evidence derived from the possibility of waking the hibernating animals by the common methods used for waking a sleeper.
The hibernating animal sleeps only; and while sleeping it consumes or wastes; and if the cold be prolonged it may die from waking.
Richardson notes that the nearest natural approach to the stage of passive efficiency is seen in hibernating animals.
Asparagus beetles are very susceptible to sudden changes of temperature, and immense numbers of hibernating beetles are sometimes killed in winter during severe cold spells following "open" weather.
The length of the adult stage is about ten months, depending, of course, upon the time the warm days approach in the spring and upon the cold stretches which intervene, conditions which influence emergence from their hibernating quarters.
After emerging from their hibernating quarters, the beetles jump or fly to the nearest rose bush and soon begin to satisfy their appetite after the long winter's fast.
Hibernating may begin early in November, but in most localities, and in most years, the time is likely to be a month later.
I knew of one grizzly hibernating in a prospector's abandoned tunnel.
The cubs are born in the hibernating cave in January, February, or March, probably the majority in February.
During these last months of his bachelorhood, Hawthorne appears to us somewhat in the light of a hibernating bear; for we hear nothing of him at that season at all.
We have observed this bat hibernating in the limestone quarries of Cass and Sarpy counties, where it was commonly found in drill holes or clinging to the ceiling or walls.
The hibernating habits of the grizzly are not completely understood.
Sometimes the chipmunk, and the squirrel also, indulge in hibernating periods of sleep despite their ample stores of convenient food.
Apparently they at once sink into a hibernating sleep.
Although during the winter they indulge in long periods of what may be called hibernating sleep, they are awake a part of the time and commonly lay in abundant stores for winter.
During the prolonged hibernating sleep, the bear does not eat, but he commonly needs a thick snowy blanket to keep him comfortable.
The trees suspended in this enforced hibernatingsleep lost a summer's fun and failed to envelop themselves in the telltale ring of annual growth.
The raccoon, who ever seems a bright, original fellow, appears to have a hibernating system of his own.
In the few instances where I had glimpses inside of winter hibernating dens, the entire family was hibernating together.
An hour later I saw conies sitting, running over the rocks, and shouting all around me--more like recess time at school than hibernating sleep.
But I believe these periods of hibernating often correspond to stormy or snowy periods.
With his stomach completely empty he retires into hibernating quarters for the winter.
The den which the grizzly and cubs used the first winter was not used again, nor were their later hibernating places discovered.
I suppose if they were larger their mother would not be able to nourish them, on account of having to endure the hibernating fast for a month or so after their birth.
Many a raccoon takes a series of short hibernatingsleeps each winter, and between these sleeps he is about hunting food, eating and living as usual.
While the opossum is not a hibernatinganimal it remains in its den during cold weather.
They are hibernating animals and remain in the dens during the cold portion of the winter.
In the case of the rabbit in which nitrous oxid was substituted for sleep, the appearance of the brain-cells resembled that in but one other group experimentally examined--the brain-cells of hibernating woodchucks.
In hibernating woodchucks, the cells of the adrenal cortex were found to be vacuolated and shrunken.
There are two broods, the last one hibernating in the ground in the pupa state.
A bird during its lifetime has almost twice the conscious existence of, say, a snake or any hibernating mammal.
But all this and much more you will see for yourself, if you are so fortunate as to discover the hiding-place of the hibernating bat.
Several species share this habit of hibernating throughout the winter.
When the cold days of winter come and the ice begins to close over the pond, the sunfish become sluggish and keep near the bottom, half-hibernating but not unwilling to snap at any bit of food which may drift near them.
Before entering a cave or opening to spend his hibernating sleep he fasts for a few days.
Instead of hibernating in winter, beavers harvest a quantity of food-supplies in the autumn and store them for winter use.
There is great variation also in individual vineyards, those near favorable hibernating places and early spring food plants often being injured seriously season after season in succession.
The hibernating place must be dry and for this reason sandy knolls are most favored by the insects.
Three methods of control are in use to prevent the ravages of the leaf-hopper: avoiding the planting of raspberries near grapes; spraying with contact insecticides; and the destruction of hibernating places.
Fence-rows and waste lands which cannot be cultivated may often be burned over to destroy the hibernating places of grape insects.
The destruction of hibernating places is almost as effective a method of control as spraying.
Cultivation should usually be preceded by deep plowing in the fall or spring to turn under fallen leaves and weeds or grass in which hibernating insects may pass the winter.
In the case of insects, it destroys the insects themselves and the hibernating places as well.
As a rule, it is unwise to plant the bramble berries or even strawberries in vineyards, or adjoining vineyards, since these plants afford hibernating places and food plants for some of the grape insects, especially the destructive leaf-hopper.
The Breeding of Specimens: How to Get the Eggs of Butterflies; Breeding-Cages; How to Find Caterpillars; Hibernating Caterpillars.
The caterpillar, which is nocturnal, feeds on violets, hibernating immediately after being hatched from the egg, and feeding to maturity in the following spring.
