greyheaded gull and greater crested tern, walker bay nature reserve, south africa

africa animal animals atlantic bay beak beautiful beauty behaviour bergii biodiversity biology bird birder birding birdlife birdwatcher birdwatching cape cirrocephalus conservation crested cute ecology ecosystem ecotourism environment fauna feathers gansbaai greater greyheaded gull habitat landscape larus nature observation ocean ornithology plumage reserve sanctuary scenery scenic south tern thalasseus the tourism travel view walker western wild wildland wildlife wings zoology