Intermediate Egret

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Intermediate Egret

Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Ciconiiformes
Family: Ardeidae
Genus: Ardea
Species: A. intermedia
Binomial name
Ardea intermedia
Wagler, 1827
Synonyms

Egretta intermedia
Mesophoyx intermedia

The Intermediate Egret or Median[2], or Yellow-billed, Egret, (Ardea intermedia) is a medium-sized heron. It is a resident breeder from east Africa across tropical southern Asia to Australia. It often nests in colonies with other herons, usually on platforms of sticks in trees or shrubs. Two to five eggs are laid, the clutch size varying with region.

In Breeding plumage at Keoladeo National Park, Bharatpur, Rajasthan, India.
In Breeding plumage at Keoladeo National Park, Bharatpur, Rajasthan, India.
In Non-breeding plumage at Keoladeo National Park, Bharatpur, Rajasthan, India.
In Non-breeding plumage at Keoladeo National Park, Bharatpur, Rajasthan, India.

This species, as its scientific name implies, is intermediate in size between the Great Egret and smaller white egrets like the Little Egret and Cattle Egret, though nearer to Little than Great. It is about 90 cm tall with all-white plumage, generally dark legs and a thickish yellow bill. Breeding birds may have a reddish or black bill, greenish yellow gape skin, loose filamentous plumes on their breast and back, and dull yellow or pink on their upper legs (regional variations). The sexes are similar.

The Intermediate Egret stalks its prey methodically in shallow coastal or fresh water, including flooded fields. It eats fish, crustaceans and insects.

Contents

[edit] Difference from Great Egret

The non-breeding colours are similar, but the Intermediate is smaller, with neck length a little less than body length, a slightly domed head, and a shorter, thicker bill. The Great Egret has a noticeable kink near the middle of its neck, and the top of its longer bill nearly aligns with the flat top of its head. Close up, the bare skin of the Great Egret's gape line extends in a dagger shape behind the eye, while the Intermediate's is less pointed and ends below the eye. The Intermediate tends to stalk upright with neck extended forward. The Great is more patient, often adopting a sideways-leaning "one-eyed" stance.

[edit] Difference from Little Egret

Little Egrets have yellow-soled feet. They often run after fish in shallow water. Breeding birds have long nuptial plumes on the back of their heads.

[edit] Gallery

In Breeding plumage at Keoladeo National Park, Bharatpur, Rajasthan, India.

In Breeding plumage at Keoladeo National Park, Bharatpur, Rajasthan, India.

at Keoladeo National Park, Bharatpur, Rajasthan, India.
Non-breeding colours
Stalking
At Ranganthittu Bird Sanctuary April 2007

Egret showing his tongue‎

[edit] References

  1. ^ BirdLife International (2004). Mesophoyx intermedia. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 12 May 2006. Database entry includes justification for why this species is of least concern
  2. ^ Grewal, Bikram; Bill Harvey and Otto Pfister (2002). Photographic guide to birds of India. Periplus editions. 

[edit] Other References