Tricolored Heron

Egretta tricolor - Aigrette tricolore

Aigrette tricolore
Systematics
  • Order 
    :

    Pelecaniformes

  • Family
    :

    Ardéidés

  • Genus
    :

    Egretta

  • Species
    :

    tricolor

Descriptor

Müller, PLS, 1776

Biometrics
  • Size
    : 76 cm
  • Wingspan
    : 95 à 105 cm.
  • Weight
    :
Longevity

17 years

Geographic range

Distribution

Identification

Aigrette tricolore
adult plum. breeding
Aigrette tricolore
adult plum. post breeding

The Tricolored Heron has a head, back, and wings colored slate-blue while its belly, flanks, and underwings are white - differentiating it from the Blue Heron, which is entirely slate-blue. The mantle, neck, and chest feathers may be longer, finer, and grayer during the breeding season. Its long, yellow bill is tipped with black, and a stripe of white runs down its neck from the throat to belly. The male and female are similar-looking, though the white back feathers during winter may be absent. The Tricolored Heron is a medium-sized bird with a long, slender neck, and short, strong, yellow-green legs during winter and light pink during breeding season - its beak also changing color to become a bright blue. The immature has its underwings and neck a brownish-reddish color, resembling a giant Green Heron, this plumage lasting for a year.

Subspecific information 2 subspecies

  • Egretta tricolor tricolor (nc and ne South America)
  • Egretta tricolor ruficollis (e and se USA and e, w Mexico to nw South America, West Indies)

Foreign names

  • Aigrette tricolore,
  • Garceta tricolor,
  • garça-tricolor,
  • Dreifarbenreiher,
  • lagúnagém,
  • Witbuikreiger,
  • Airone tricolore,
  • trefärgad häger,
  • Prakthegre,
  • volavka trojfarebná,
  • volavka tříbarvá,
  • Trefarvet Hejre,
  • karibianhaikara,
  • martinet tricolor,
  • Hólmahegri,
  • czapla trójbarwna,
  • trejkrāsu gārnis,
  • tribarvna čaplja,
  • Трёхцветная цапля,
  • サンショクサギ,
  • 三色鹭,
  • 三色鷺,

Voice song and cries

Aigrette tricolore
juvenile

This bird is usually silent outside of breeding periods, but it makes a raucous, nasal sound when it takes flight.

Habitat

Aigrette tricolore
adult

The Tricolored Heron lives near fresh or brackish bodies of water, which are usually shallow. It can be found in marshes, lagoons, mangroves, mudflats, and also on coastal shorelines.

Behaviour character trait

Aigrette tricolore

The Tricolored Heron is a generally solitary migrant bird during the day, but it spends the night with its peers in mostly mixed dormitory-style roosts.

Aigrette tricolore
adult
On its feeding grounds, it is highly territorial and energetically chases away any intruders, regardless of species. It hunts by stalking in shallow waters. It can be seen steadily wading through its hunting area, sometimes getting its belly wet. It may sometimes run in search of its prey. Like many species, it spends a lot of time preening and grooming its feathers.

Flight

Aigrette tricolore
adult plum. breeding

She flies with her neck tucked in, like all the Ardeidae.

Dietfeeding habits

Aigrette tricolore
juvenile

The Tricolored Heron's basic diet is fish, but it also will not deny itself shellfish, amphibians, small reptiles, gastropods and aquatic insects.

Reproduction nesting

Aigrette tricolore
adult plum. breeding

The Tricolored Heron nests in colonies that can sometimes be very large. The male starts the nest perched on a tree two or three meters high.

Aigrette tricolore
adult plum. breeding
The female then completes the work. The nest is made of branches and twigs forming a platform with a bowl lined with grass and leaves in the middle. The female lays 3 to 4 pale blue eggs in the nest at a rate of one per day. The parents take turns incubating the eggs for about three weeks. The eggs will hatch with a few days between them. The chicks will be fed by the couple for 35 days with regurgitated food. At around twenty days, the young begin to explore outside the nest, but they won't take flight until a month later.

Geographic range

Distribution
Aigrette tricolore
adult

This New World coastal bird can be found on the Pacific Coast from California to Peru, and on the Atlantic Coast from the United States to the mouth of the Amazon in Brazil. It is also found in the Caribbean and French Guiana.

Threats - protection

Aigrette tricolore
adult
IUCN conservation status
Extinct
Threatened
Least
concern
Extinc
in the Wild
Near
threatened
Not
evaluated
EX EW CR EN VU NT LC NE

Reproduction can be compromised by cold weather, predation, or water levels that remain too high. Certain nocturnal raptors do not hesitate to attack adults. The populations of Tricolored Herons are stable and sometimes in slight increase, such as in the United States.

Sources of information

Other sources of interest

QRcode Aigrette tricoloreSpecification sheet created on 03/08/2023 by
Translation by AI Oiseaux.net
© 1996-2024 Oiseaux.net