On Thursday, April 25 at Stone Zoo, we will be conducting a routine animal escape drill. These drills are an important part of our preparedness training. While the drill is occurring, guests will be asked to move to certain areas within the Zoo for a brief period of time (not to exceed 10 minutes). We will do our best to have minimal impact on the guest experience. We are very dedicated to safety and we appreciate your participation. If you have any questions about what to expect, please do not hesitate to contact us at 617-989-2000 or info@zoonewengland.org.


Scarlet Ibis

Eudocimus ruber

About the Scarlet Ibis


Geographic Range:


Class: Aves  
Order: Ciconiiformes  
Family: Threskiornithidae 
Genus: Eudocimus  
Species: ruber

The scarlet ibis is a striking tropical bird that is completely red except for its black wingtips. Its coloring, which intensifies as the bird ages, is the result of a diet heavy on crustaceans, which it plucks from mud and water with its long, curved bill. The scarlet ibis is a social bird, living in large flocks in the same general area for most of its life. Males attract their mates with a number of displays, including songs and dances.

Scarlet Ibis Facts


The scarlet ibis is a tropical bird whose wings are completely scarlet except for its black tips. Their coloring comes from the crustaceans they eat, and the color intensifies as they grow older. These birds have long necks and legs, and their beak is long and curved. Guided by touch, they use their beaks to probe mud and water for food. Their feet are perched and slightly webbed.


  • Length: 22 – 30 inches
  • Wingspan: 12 inches
  • Weight: 1.5 – 3 pounds


Crustaceans, mollusks, fish, insects, frogs and small snakes.


These birds reach sexual maturity at 4 to 5 years of age. The male ibis uses a number of displays, including songs and dances, in order to attract his mate. After finding his mate, the birds build a nest together using loose sticks. They lay three to five green eggs and incubate them from 19 to 23 days. Both parents incubate the eggs and care for the young. Chicks fledge after 39 to 45 days.


Ibis live in large flocks and tend to live in the same general area for most of their lives. Breeding colonies can include thousands of birds. Having a dense population helps these birds keep watch for predators and provide "safety-in-numbers" for both birds and their eggs and hatchlings.


Found throughout northern South America, from Venezuela to eastern Brazil. Their preferred habitat is mud flats, estuaries, shorelines and shallow bays.

Median Life Span:

Up to 20 years in the wild


Tree-climbing or tree-dwelling predators (cats, monkeys, raptors) can predate ibis eggs and young. Water-dwelling predators (caimans, turtles, snakes) pose dangers to the wading adults. The creation of a road through the Caroni Swamp in Trinidad disrupted scarlet ibis breeding for many years, though populations have started nesting there again.

Fun Facts:

  • The scarlet ibis is the national bird of Trinidad and Tobago.
  • This is an ancient bird whose fossils date back to 60 million years ago.