swallow feeding chicks

adult animal babies baby barn begging being bird birds breeding brood building calling ceiling chick chicks clinging estonia estonian europe european farm fauna feather feathers fed feed feeding fledge food four gape group having hirunda hirundo home hungry just juvenile many martin migratory mud national nature nest nesting nestling parent passerine plumage portrait rustica sibling side smal spring springtime streamers summer swallow swallows tail the them unfledged wall wild wildlife with yellow young