Jeff Cordulack of Audubon Greenwich said the annual event is a highlight for bird enthusiasts.
"This is one of the best family and nature-friendly events in the area," he said.
It takes place from 11 a.m. to 5 p.m. on Saturday and Sunday, rain or shine.
The festival coincides with the annual hawk migration, Cordulack said. In two separate counts that were done in the past week, Thursday, 1,000 hawks were counted on one day, and 2,000 hawks were counted on the second day.
There will be live "Birds of Prey" shows held at 1 and 3 p.m. on both Saturday and Sunday. A highlight will be the release of a rehabilitated raptor into the wild by the group Wildlife in Crisis, Cordulack said.
There will be outdoor activities and nature-themed games along with live animals from the New Canaan Nature Center & Critter Caravan. There will also be environmental exhibits as well, he said.
The admission price is $7 per person for members and $10 per person for all others, with the exception of children aged four and younger whose admission is free.
Annual memberships for the entire family is $35 and can be purchased at the center.
All proceeds supports the Audubon Center in Greenwich and the National Audubon Society mission to protect birds and their habitats.
The Greenwich center is located at 613 Riversville Road.
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