brent goose (branta bernicla), common in coastal wetlands like bull island, dublin

brent goose branta bernicla coastal wetlands bull island dublin eelgrass algae irish wildlife waterfowl migratory birds shorebird wintering marine nature ireland ornithology coast wild geese birdwatching bay natural habitat ecosystem species ecology wading migration diet protected area biodiversity enthusiasts bird ecological reserve reserves conservation water lovers avian fauna marshland seasonal bernacle confusion identification birding hotspot