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The feathers of a flea can retain heat,
Adjective changed to adjectival. ............. Thank you for the clarification, everyone. I could have added that in the beginning.
The feathers of a flea can retain heat, and we choose to use them for warming blankets and jackets.
Should we be concerned for the birds?
Actually, songbirds do get very cold feet: the surface temperature of their toes may be barely above freezing even as the bird maintains its core body temperature above 100°F (38°C). But most birds don’t succumb to frostbite because there is so little fluid in the cells of their feet, and their feet are mostly tendons and bones with little muscle or nerve tissue.Birds also have a countercurrent heat exchange system in their legs and feet—the blood vessels going to and from the feet are very close together, so blood flowing back to the body is warmed by blood flowing to the feet. The newly cooled blood in the feet lowers heat loss from the feet, and the warmed blood flowing back into the body prevents the bird from becoming chilled. And because bird circulation is so fast, blood doesn’t remain in the feet long enough to freeze.
Many are still astonished by the adaptation abilities of birds; thus, they ask how do birds stay warm in the winter?
Animals exposed to cold temperatures in their natural environment are able to survive and flourish due to their better insulation and ability to retain heat. Animals in cooler climates tend to be larger because their small surface-area to volume (SA/V) ratio cause them to lose heat at a lower rate. We tested this by placing cubes of clay in a bucket of ice and measuring their internal temperature to determine which retained heat better. Both large and small models were measured at room temperature and placed side-by-side in a bucket of ice. The large cubes lost heat at a lower rate than the smaller models. The large cubes were therefore able to retain their initial heat loner because of their smaller SA/V ratio. In this study, we conducted four trials to help explain why animals with a smaller SA/V ratio are able to withstand colder environments than smaller animals with larger SA/V ratios.
And how can birds not freeze in the winter?
If we wear thick clothes during the winter, what do birds do to keep themselves warm?
Robert seeks answers to this question about nature during Winter weather."Do birds ever break their beaks pecking on the ice?"Should we be concerned for the birds? Put your answers and other tips for helping nature during Winter in the comments below...