little bird with a worm in its beak flies towards a aviary but doesn't dare to fly in and turns again in the air and flies away

little bird worm beak flies aviary dare turns air away hesitant feathered chirping cautious flight hesitation feathers avian direction wings hesitates bird fly fluttering retreats sky freedom flutter departure little towards doesnt again feather chirp sing nest branch watch escape search hungry tweet flock glide perch observe fearless explore