ROOKERY INFORMATION

Photo In the mid 1970’s the St Augustine Alligator Farm expanded its Alligator Swamp exhibit and inadvertently developed an outstanding natural bird rookery. Among other changes, the boardwalk was extended through the swamp and more alligators were added. Although the Alligator Farm has always been a popular spot for wading birds to roost, the enhancement of the swamp created a unique nesting opportunity for them. The additional alligators provided a protection from arboreal predators such as raccoons, opossums, and snakes. Although the birds do lose some hatchlings to the alligators, their losses are far fewer than if predators raided their nests. The extended boardwalk enabled visitors to view nesting birds virtually feet away. Over the years, the rookery has grown in size to what it is today, one of the largest natural bird rookeries in the state of Florida.

Photo The swamp extends over approximately two acres of natural wetlands and is home to around 65 American Alligators and many native turtles. During the non-breeding season many birds fly into the swamp in the evening to roost, or sleep, over the alligators. Among these are Black and Yellow Crowned Night Herons, White Ibis, and Roseate Spoonbills. Once the weather starts warming up, the roosting birds migrate to their preferred nesting habitat and the rookery birds begin to gather. The large live oaks on the North and East side of the swamp are the favored nesting sites and are usually the first to be occupied. It is generally the Great Egrets that arrive first and begin their courtship. The lower elderberry bushes along the peninsula are usually left for the later arrivals, the Snowy Egrets, Tri-colored Herons, Little Blue Herons, and Cattle Egrets. The tops of the oaks are favored by the Wood Storks. The Green Herons choose nesting spots deep within the trees of the swamp or elsewhere on the farm.

Once a suitable nest site has been selected, or fought for, the males will begin advertising for a mate. For all of the rookery species, courtship begins with a male displaying for a female. Some of the typical displays you may see are the stretch display, bill clapping, and snap displays. These behaviors are meant to show off the elaborate breeding plumage both sexes have developed for the season. Once a female has accepted, he will fly off to forage for nesting material. The female remains at the site and constructs the nest with twigs brought to her by the male. The pair will often display then copulate after the male returns with each twig. Depending on the species, three to five eggs are laid and incubated by both sexes, with the female as the prime incubator. After about three weeks, the chicks hatch. Usually the last chick to hatch is smaller and weaker than its siblings and is killed or pushed out of the nest by the older chicks. The alligators do get a small reward for their protection. While they are small, one parent will stay to shade and protect the chicks while the other parent is hunting for food. They eat mainly fish, but also frogs, crayfish, crabs, lizards, insects, fruit, and seeds. A number of hunting methods are used such as foot stirring, foot raking, bill vibrating, and canopy feeding. As the nestlings develop, both parents will leave during the day to bring food back for the young. At four to five weeks of age, the fledglings begin to venture from the nest, but are still fed by the parents. Usually at six weeks they are on their own but most species do not get their true adult plumage until over a year later.

Now you can enjoy a live view of our rookery with our brand new NestCam!

NESTING UPDATES

Photo Nesting updates on our wild bird rookery available,
Birdrookery groups is an email listserv for news and updates about the wild bird rookery at the St Augustine Alligator Farm. The natural alligator swamp area of the park attracts hundreds of nesting birds every year that are virtually feet away from the boardwalk. This listserv will have postings of the nesting activities so photographers and bird watchers can best plan their visit. This listserv has been developed is being updated by Amanda Whitaker, Curator of the Bird and Mammal department.

Rookery Updates Available Online:

To subscribe to birdrookery groups, send a blank email to:
birdrookery-subscribe@yahoogroups.com

To post a message to members of this group send email to: birdrookery@yahoogroups.com