Great Blue Herons: Behavior, Mating, and Migration

Hunting and Daily Behavior

Great blue herons (Ardea herodias) are solitary, patient hunters that employ a “wait and strike” strategy in shallow waters. They wade slowly through marshes, ponds, and wetlands with their heads held low, then explode with lightning-fast strikes to spear prey with their dagger-like bills. Fish comprise the bulk of their diet—mullet, minnows, and killifish—but they also hunt frogs, crustaceans, reptiles, and small mammals like mice and young birds.​

Herons hunt primarily at dawn and dusk when light is low and prey is most active, though Wakodahatchee’s abundant food sources support feeding throughout the day. They are territorial birds, often claiming favorite hunting spots along the same boardwalk sections day after day. This predictability makes them ideal subjects for wildlife photographers who learn heron routines and position accordingly.​

Mating and Nesting

Great blue herons breed in colonies called rookeries, with dozens or hundreds nesting together in tall trees near water. Mating season in Florida peaks January through April, when males perform elaborate courtship displays—bill snapping, neck plume erection, and dramatic posturing to attract mates. Once paired, both parents build large stick nests high in cypress, mangrove, or pine trees, often reusing and expanding nests year after year.​

Females lay 3–7 blue-green eggs that both parents incubate for approximately 28 days. Chicks fledge within 50–60 days, though they remain dependent on parents for feeding during their first few weeks of independence. Winter in South Florida—December through March—is prime nesting season, offering photographers dramatic opportunities to witness courtship, nest-building, and chick-rearing at close range from Wakodahatchee boardwalks.​

Migration and Year-Round Presence

Great blue herons show complex migration patterns across North America. Northern populations migrate south in fall, while Florida’s year-round residents remain stable or increase seasonally with northern arrivals. In South Florida, heron populations swell during winter months (October–April) as birds flee colder northern wetlands. This seasonal influx makes winter the prime season for heron photography at Wakodahatchee and other premium birding locations.​

The species shows strong site fidelity, returning to the same rookeries, feeding territories, and roost sites year after year. Tagged herons often travel 10–30 miles between roosts and feeding areas, explaining sightings across multiple wetland systems in Palm Beach County. This behavior means consistent early morning visits to Wakodahatchee reward photographers with repeated encounters and opportunities to photograph individual birds across multiple trips