Egretta caerulea, commonly known as the Little Blue Heron, is native to the Americas. Its geographical distribution includes the southeastern United States, parts of the Caribbean, Mexico, Central America, and extends into northern South America. This species is commonly found in the coastal and inland regions of these areas.

The Little Blue Heron typically inhabits freshwater and saltwater wetlands, including marshes, swamps, estuaries, ponds, rivers, and lagoons. It prefers shallow waters where it can hunt for prey efficiently. The climate in its habitat ranges from temperate to tropical, depending on the specific geographic location.

Egretta caerulea occupies a niche as a wading bird, primarily feeding on small fish, amphibians, crustaceans, and insects. Its long legs and bill are adapted for hunting in shallow waters. The species may occasionally forage in fields or on mudflats during low tides. The Little Blue Heron is an important predator in its ecosystem, helping to maintain the balance of aquatic life in its habitats.