The majority of animals breeds in warm season when the sun warms air enough, and around there is a lot of food. However some animals give birth to cubs only in the winter, being surprising not only of inhabitants, but also scientists-zoologists.
Crossbill - the most frost-resistant birdThis small birdie, the relative of a bullfinch, is interesting by the beak. Its ends are crossed and act on each side - such "tool" very easy to get sunflower seeds from coniferous cones which are the main food of a crossbill. Unlike many other animals, crossbills begin to breed in February when there are most hard frosts. It is connected with the fact that February is especially rich with a harvest of coniferous cones.
Females build the warmed nests and warm the been born cubs with the dense down. Besides, baby birds are rather resistant to a frost - having even stiffened to a half-dead state, they quickly get warm in the warm environment and continue normal activity.
Baby birds of crossbills are born with a direct beak and some time are not capable to get food independently.
Imperial penguin - got used to cold weather In spite of the fact that penguins live in cold Antarctica and in general are accustomed to subzero temperature, the majority of their types nevertheless breeds in the spring and in the summer when there occurs small warming. However imperial penguins - the largest look - lay eggs in the fall, and baby birds hatch in the middle of the Antarctic winter. Average temperature of this period - 40-50os a frost, also approaches Antarctica a gusty north. The female of a penguin lays only one eggs which then put on the paws and cover with a thick fat fold. The period of such watch lasts about 2 months, during this time females eat nothing. Then they pass egg to males and leave on the hunting for fish lasting three months. To return of a female the kid already hatches.
The imperial penguin finds the baby bird on a voice and feeds only him.
Polar and brown bears - reproduction in the winter Both of this species of bears are characteristic the fact that the birth of their cubs occurs in the winter. Females begin to dig dens in the fall, and then retire there for three-five months. Bear cubs are born among winter. First they are helpless, blind and deaf, but in 3 months the cubs are capable to eat not only milk, but also usual food of adult individuals. Bears breed rather slowly. Females begin to bring posterity on average from 6 years, and childbirth happens time in 2-4 years. For once no more than three cubs who often perish from hunger or as a result of fights with adult males are born. Therefore brown and white bears are included in the Red List.