animal

beak

bird

birdlife

birds

breeding

chicks

colors

crested

cristatus

daylight

dives

eggs

environment

europe

flight

floating

great

grebe

green

gregarious

italy

lake

legs

livery

marshes

medium

morning

natural

nature

nest

ornithologist

ornithology

outdoor

outside

palmate

piediluco

plumage

podiceps

podicipedidae

reserve

river

size

summer

sunlight

swamp

swimming

terni

umbria

water

waterfowl

wild

wildlife

wings

zoology