The plumed egret (Ardea plumifera) is a species of heron native to Australia and Oceania. Previously this species was regarded as a subspecies of the intermediate egret (Ardea intermedia sensu lato) alongside the Asian intermediate egret (A. (i.) intermedia) and the African yellow-billed egret (A. (i.) brachyrhyncha).
| Plumed egret | |
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| Plumed egret in breeding plumage, Fogg Dam Conservation Reserve, Northern Territory, Australia | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Pelecaniformes |
| Family: | Ardeidae |
| Genus: | Ardea |
| Species: | A. plumifera
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| Binomial name | |
| Ardea plumifera (Gould, 1848)
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Resident Non-breeding
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| Synonyms | |
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Taxonomy
editThe plumed egret was first formally described as Herodias plumiferus by the English ornithologist John Gould with its type locality given as New South Wales.[2] This taxon has been regarded as a subspecies of the intermediate egret (Ardea intermedia) but on 26 September 2023 the International Ornithological Congress recognised the three subspecies of A. intermedia as valid species.[3]
Description
editThe plumed egret is a medium-sized heron, 56 to 70 cm (22 to 28 in) in length with an all white plumage. In breeding plumage it develops long white frilly plumes from its breast and shoulders. In addition, the bill changes colour to red or orange with green lores and the tibia is red and the tarsus is black. Outside the breeding season the bill is yellow-orange with yellow lores and the legs are black.[4]
Distribution and habitat
editThe plumed egret is found in Australasia and breeds in eastern Indonesia, Timor-Leste, New Guinea and Australia,[5] with vagrants occurring in New Zealand and the Solomon Islands.[6] This species is found in the shallow water at the edges of freshwater wetlands and the intertidal zone.[4]
Biology
editThe plumed egret is diurnal, hunting in shallow water for fish, frogs, aquatic insects and crustaceans. In Australia this species breeds in late summer forming colonies in trees. They lay 3-5 pale bluish-green eggs which are incubated by the male and the female and take 24–27 days to hatch. The young fledge in 5 or 6 weeks.[7]
References
edit- ^ BirdLife International (2016). "Ardea plumifera". IUCN Red List of Threatened Species. 2016: e.T22727683A94956915. doi:10.2305/IUCN.UK.2016-3.RLTS.T22727683A94956915.en. Retrieved 1 May 2023.
- ^ Rodolphe Meyer de Schauensee (1957). "On Some Avian Types, Principally Gould's, in the Collection of the Academy". Proceedings of the Academy of Natural Sciences of Philadelphia. 109: 123–246. JSTOR 4064497.
- ^ "IOC World Bird List v13.2 Proposed Splits/Lumps". IOC. 26 September 2023. Retrieved 27 September 2023.
- ^ a b Ken Simpson & Nicolas Day (2013). Birds of Australia (8 ed.). Christopher Helm. p. 76. ISBN 978-07136-6982-4.
- ^ Adrian Walsh and Chris J. Chafer (2022). "Taxonomic revision, occurrence, and identification of Intermediate Egret Ardea intermedia in North Queensland, Australia". Australian Field Ornithology. 39: 174–194. doi:10.20938/afo39174194.
- ^ "Plumed Egret Ardea plumifera". Birdlife International. Retrieved 1 October 2023.
- ^ "Intermediate, Plumed Egret". Birdwatch. BiodiversityWatch. Retrieved 1 October 2023.