Brown pelicans (Pelecanus occidentalis) in flight, Sanibel Island, J.N. Ding Darling National Wildlife Refuge Florida, USA

brown pelicans flight wading birds wildlife nature sanibel island florida water tranquility habitats wetlands conservation blue sky swimming still coastal ecosystem reserve refuge birdwatching avian aquatic flock feathers graceful migration shorebirds feeding environment outdoor natural habitat adventure biodiversity flora fauna landscape tranquillity serene beauty observation beach marine animal behavior