Hummingbirds enter a semi hibernating state called & quot; torpor & quot; at night, a new study has found. When these excited birds enter this calm state, they have the ability to dramatically lower their body temperature. In fact, in some cases, these birds can drop their bodies close to freezing point. The study was published in the journal Biology Letters. < / P > < p > this study examined hummingbirds living in the Andes and found that in this dormant state, these birds regulate their body temperature in a way that significantly slows their metabolism, bringing their bodies close to freezing point. < / P > < p > the study included more than 20 different species of hummingbirds, almost all of which entered a relaxed dormancy state during the observation period. Depending on species and individual birds, this dormancy lasts from 5 to 10 hours, but birds that stay longer in this state are better able to maintain their physical fitness than those that experience a shorter dormancy. < / P > < p > in this hibernation state, which is almost similar to that many mammals enter during the cold period of the year, some birds reduce their body temperature to a few degrees above zero, making them incredibly close to freezing point. During this time, the birds appeared to be dead, according to the researchers. < / P > < p > “if you pick it up, you don’t even know it’s alive,” lead author of the study, Blair wolf, said in a statement. “It’s like hibernation, but it’s regulated on a more rigorous schedule.” The bird’s “biological clock” seems to be well managed, and at sunrise, the bird immediately returns to its normal, highly active state. Privacy Policy