Just about everybody who’s turned an eye to the sky in the past few weeks has had the opportunity to see those familiar V-ish shapes of migrating birds flying south for the winter. But why do they do it? I mean don’t get me wrong, right about every February I’m wishing I could fly south myself to somewhere nice and warm but birds have even more complex reasons for needing to move on. Here are just two of them to share with your family the next time you see a migrating flock.
With hearts that beat anywhere from 300-600 times a minute (the smaller the faster) birds need to eat their weight every day just to survive. Migration allows them to find new food sources and gives depleted plants and insect populations time to recover.
The warmer, more plentiful areas in the south often prove to be a safer place for birds to have and raise babies. Birds often abandon their young as soon as they can fly so leaving them in a safer place with more available food is actually smart bird strategy. (Party birds abandon their young at the University of Miami).