lesser black-backed gull (larus fuscus) nest

lesser black backed gull larus fuscus baby bird baltic birds beak colony incubates birth process birthday born breaking eggshell brood time broodiness brooding chick egg seagull nest chicken childbirth clutch couples education tooth fledgling hatching hatch hatched incubation period ridibundus mew nestling nidification rearing offspring seabirds shell unusual water wildlife young black-backed scandinavian meadow islands eastern freshwater gulf finland sea