bird bird life bird photography birding flamingo Flamingos water bird water in zoo zoo birds aggression aggressive animal beak bill duck feather feet feisty foot plumage stern water webbed zoo close-up goose Marieke Kuijpers nature wildlife Ouwehands Dierenpark wild color cold penguin group Pelecanus erythrorhy swim White pelican wings baby Ciconia ciconia cute Planckendael stork white stork fishing grey grey heron Heron hunt hunting looking for prey park pond sunshine