Thus they prepare for the hardships of winter, whether they are to remain in the cold northlands or make a strenuous journey to the south. Many scientists think that birds are born with a sense of direction that tells them where to go, and that birds use the sun, moon, and stars to figure out where they are, much like early sailors did. It is then that insects, seeds, and berries are hard to find. Feeding is most important after ice storms and heavy snowfalls have covered natural food supplies. If feeding is begun it must be kept up until spring.
Birds become dependent on a food tray.
They may suffer or even die if feeding is stopped in midwinter. Hang feeders out of reach of squirrels and night prowlers, such as opossums and raccoons. These wild animals should have their own feeders on the ground. Bird feeders can be protected by metal guards or hung from the end of a branch. Squirrels are expert tightrope walkers.