they can and do release while flying. From the time they hatch, migratory birds apparently respond instinctively, growing restless as the day length and angle of the sun change in spring and fall.
As spring arrives, our gardens begin to transform ... leaving blackbirds and other species struggling to feed themselves and their chicks. A number of birds that spend winter in warmer climates fly ...
Birds are the undisputed champions of epic travel -- but they are not the only long-haul fliers. A handful of bats are known to travel thousands of kilometers in continental migrations across North ...