Great-billed Heron

Great-billed Heron

Summary:

Profile Great-billed Heron
[Authority] Raffles, 1822 | [group] Herons and egrets | [order] CICONIIFORMES | [family] Ardeidae | [latin] Ardea sumatrana | [UK] Great-billed Heron | [FR]

[Authority] Raffles, 1822 | [group] Herons and egrets | [order] CICONIIFORMES | [family] Ardeidae | [latin] Ardea sumatrana | [UK] Great-billed Heron | [FR] Heron typhon | [DE] Russreiher | [ES] Garza de Sumatra | [NL] Sumatraanse Reiger | copyright picture

copyright: J. del Hoyo

Dark grey-brown with a paler throat and grey legs. Breeding plumage silvery on the foreneck, crest and back. Immature is browner and with no crest.

Its habitats are largely coastal such as islands, coral reefs, mangroves, large rivers. However, occasionally, it can be found inland in shallow ponds.

It feeds in shallow water, spearing fish with its long, sharp bill. It will wait motionless for prey, or slowly stalk its victim.


This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence 30% decline over ten years or three generations). The population size may be moderately small to large, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern. [conservation status from birdlife.org]


In solitary pairs spaced about 1 km apart, principally in spring and autumn. Nest deep in the mangroves in a fork, building a stick platform lined by finer twigs and leaves. Lays two eggs .

Sedentary with some post-breeding dispersal

Specification

  1. Measurements
  2. spanwidth min.: 185 cm
  3. spanwidth max.: 230 cm
  4. size min.: 100 cm
  5. size max.: 115 cm
  6. Breeding
  7. incubation min.: 0 days
  8. incubation max.: 60 days
  9. fledging min.: 66 days
  10. fledging max.: 0 days
  11. broods 1
  12. eggs min.: 1
  13. eggs max.: 3
  14. Conservation Status
  15. Great-billed Heron status Least Concern
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