Bare-throated tiger heron

The bare-throated tiger heron (Tigrisoma mexicanum) is a wading bird of the heron family, Ardeidae, found from Mexico to northwestern Colombia, with one recorded sighting from the United States in Hidalgo County, Texas.[2] It is 80 cm (31 in) in length and weighs 1,200 g (42 oz).

Bare-throated tiger heron
Adult
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Order: Pelecaniformes
Family: Ardeidae
Genus: Tigrisoma
Species:
T. mexicanum
Binomial name
Tigrisoma mexicanum
Swainson, 1834
Bare-throated tiger heron range

This large species is found in more open habitats than other Tigrisoma herons, such as river and lake banks. It waits often motionless for suitable prey such as fish, frogs or crabs to come within reach of its long bill.

This is a solitary breeder, not normally found in heron colonies. The nest is a small flattish stick platform in a tree into which 2–3 green-tinged white eggs are laid.

Description

The throat is bare and is greenish-yellow to orange in all plumages. The adult has black crown and light grey sides of the head, the sides of the neck and the upperparts otherwise blackish narrowly barred buff. The median stripe down the fore-neck is white-bordered with black; the remaining underparts are dull cinnamon brown. The juvenile is buff coarsely barred with black, more mottled and vermiculated on wings; the throat, median underparts, and belly are whitish.

The flight is heavy, and the call is a hoarse howk-howk-howk. Males also give a booming hrrrowwr! call, especially at sunset. During emission of the call, the beak opens wide and undulations can be seen along the course of the throat from mid-thorax caudally.

  • juvenile on nest
    juvenile on nest
  • Juvenile
    Juvenile

References
  1. BirdLife International (2018). "Tigrisoma mexicanum". IUCN Red List of Threatened Species. 2018: e.T22697259A130188356. doi:10.2305/IUCN.UK.2018-2.RLTS.T22697259A130188356.en. Retrieved 12 November 2021.
  2. Birding.typepad.com Archived January 23, 2010, at the Wayback Machine
  • Robert S. Ridgely and John A. Gwynne - Birds of Panama with Costa Rica, Nicaragua and Honduras
  • Stiles and Skutch, A guide to the birds of Costa Rica ISBN 978-0-8014-9600-4
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