Where Great Egrets Thrive in the Everglades

Habitat Preferences of Ardea alba in the River of Grass

The Great Egret (Ardea alba) is a ubiquitous, year-round resident of Everglades National Park (ENP). Its highest densities occur in shallow-water habitats at lake and marsh peripheries—specifically:

• Marl prairie edges flanking deeper sloughs (Shark River Slough, Taylor Slough)
• Peripheral canals (L-29, L-67, C-111) where fish concentrate
• Coastal saline glades and mangrove ecotones (Florida Bay margin)
• Tree islands (hammocks) with nesting colonies (rookeries) in pond apple (Annona glabra), willow (Salix caroliniana), and mangrove stands

Foraging Behavior

Great Egrets are visual stalkers—they need water depths of 5–30 cm to hunt small fish (mosquitofish, killifish, sunfish), amphibians, crayfish, and aquatic insects. They avoid deep open water (>50 cm) and dense sawgrass stands where prey is inaccessible.

Seasonal Shifts

• Dry season (Nov–Apr): Concentrate around receding pools, canals, and managed impoundments (e.g., STA-1W, STA-2). Nesting peaks Feb–Apr.
• Wet season (May–Oct): Disperse widely across flooded marl prairies; harder to census.

Best Viewing Spots for Visitors

• Anhinga Trail (Royal Palm) – boardwalk over Taylor Slough, reliable year-round
• Shark Valley Tram/Loop – 15 mi loop, egrets along borrow canal
• Eco Pond (Flamingo) – brackish lagoon, mixed wader flocks
• Nine Mile Pond / Hell's Bay – paddle routes through mangrove creeks

Conservation note: Great Egrets rebounded from plume-hunting near-extinction (early 1900s) after the 1918 Migratory Bird Treaty Act. Today they're a sentinel species for Everglades restoration success.