Humming birds being so small in size and so energetic, you must be wondering how often should they feed to keep themselves active? Hummingbirds must eat more than their weight in food each day, and how do they fulfill? Their survival depends critically on eating frequently. That’s the reason you see them often in your backyard or garden searching for nectar. If you have hummingbird feeder in your garden, you are sure to have them visit frequently.
How much and how often do hummingbirds eat?
Hummingbirds have been found to eat meals like humans. A meal is a relatively quick and large intake of food and then it is followed by time when no feeding occurs while the energy that has been consumed is used. Unlike humans, they do not feed again until the energy is uses and they are ready for their next meal. Hummingbirds feed on a variety of flower nectars with caloric values that may vary from 10 to 82 calories per meal (1/100 fluid ounces). The frequency and the amount they eat in a day, depends on the energy content of food. Relative rich sugar solution will keep them up for longer and they would eat less frequently as compared to diluted sugar solution.
How do hummingbirds manage to survive overnight without eating?
The impression we get is that hummingbird might very quickly starve to death if it does not eat in a short time. If you compare the amount of energy they used with the energy they ate, it actually goes back to eat again before it had utilized all the energy it had eaten. Which means, some energy from each meal was saved and stored as fat. The energy stored by the end of a day usually is just sufficient to survive overnight.
How does the hummingbird survive if it cannot feed enough, or if it is cold?
Hummingbirds, like any hibernating mammals, can lower their body temperature overnight to conserve energy. However, hummingbirds do not lower their body temperature unless there is a danger they actually may starve.
via http://www.hummingbirds.net
Image by: Hector Brandan