An aerial view of Cattle Egrets flying to Habitat Island after sunset to nest in the trees in Exploration Green, Clear Lake, Houston, Texas

exploration green aerial view cattle egrets habitat island houston texas clear lake sunset nesting trees birds wildlife avian habitat island flying roosting dusk nature migration ecological conservation ecosystem birdwatching ornithology urban park wetlands avifauna marshland bird colony environmental flight nesting behavior wildlife habitat migratory birds bird migration urban wildlife ecological reserve avian ecology bird habitat bird conservation