Comb-crested jacana

The comb-crested jacana (Irediparra gallinacea), also known as the lotusbird or lilytrotter, is the only species of jacana in the genus Irediparra. Like other jacana species, it is adapted to the floating vegetation of tropical freshwater wetlands.

Comb-crested jacana

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Charadriiformes
Family: Jacanidae
Genus: Irediparra
Mathews, 1911
Species:
I. gallinacea
Binomial name
Irediparra gallinacea
(Temminck, 1828)

Description
A comb-crested jacana at Corroboree Billabong, Northern Territory, Australia

This species is unmistakable. It has a black crown and hindneck with a fleshy red wattle covering the forehead and forecrown, contrasting with a white face and throat. The comb is pinker in breeding adults, more orange when not breeding.[2] There is a broad black band on the lower breast with white belly. The underwing and flight feathers, which show most prominently in flight, are black. Back and upperwing mainly grey-brown with black primary coverts, rump and tail. The long legs with extremely long toes trail in flight. The male is slightly smaller than the female and measures 20–22 cm (7.9–8.7 in) in length and weighs 68–84 g (2.4–3.0 oz). The female measures 24–27 cm (9.4–10.6 in) in length and weighs 120–150 g (4.2–5.3 oz).[3] The wingspan ranges from 39 to 46 cm (15 to 18 in).

Fogg Dam, Middle Point, Northern Territory, Australia, March 2014

Distribution and habitat

The bird occurs in south-eastern Borneo, the southern Philippines, Sulawesi, Moluccas, Lesser Sunda Islands, north and south-east New Guinea, New Britain (Lake Lalili), and northern and eastern Australia. Its habitat are large freshwater wetlands, swamps and lakes with abundant floating vegetation, such as water-lilies or water hyacinth, forming a mat on the water surface which it is able to walk on. Although the species is rare and localised it is not globally threatened.[2]

Behaviour

General Behaviour

The comb-crested jacana walks slowly and deliberately. It often congregates in flocks. When disturbed, it flies low over water and lands again on open vegetation.

Breeding

The comb-crested jacana is polyandrous.[4] It builds a flimsy nest on floating or emergent vegetation, in which the female lays four lustrous, pale brown eggs covered by black markings. Only males incubate.[4] The young hatch well-developed and soon leave the nest.

Feeding

It eats seeds and aquatic insects gleaned from floating vegetation on the water surface.

Voice

This species gives a squeaky, high-pitched chittering, also described as a shrill trill with an explosive soft bugle.[2]

gollark: > > There's also a few snippets of code on the Android version that allows for the downloading of a remote zip file, unzipping it, and executing said binary> so here's the thing, TikTok as an app, continuously downloads files i.e video files, it's kinda the whole point. there's nothing "odd" about being able to download and extract zip files, the odd thing is delivering executables via zip. however, this is a non-issue and honestly a red herring, why?This is irrelevant. Yes, downloading video files is normal, downloading extra code which might be doing whatever (subject to sandboxing, at least) is not.
gollark: It could record locally and upload later, though.
gollark: This person apparently reverse-engineered it statically, not at runtime, but it *can* probably detect if you're trying to reverse-engineer it a bit while running.
gollark: > > App behavior changes slightly if they know you're trying to figure out what they're doing> this sentence makes no sense to me, "if they know"? he's dissecting the code as per his own statement, thus looking at rows of text in various format. the app isn't running - so how can it change? does the app have self-awareness? this sounds like something out of a bad sci-fi movie from the 90's.It's totally possible for applications to detect and resist being debugged a bit.
gollark: > this is standard programming dogma, detailed logging takes a lot of space and typically you enable logging on the fly on clients to catch errors. this is literally cookie cutter "how to build apps 101", and not scary. or, phrased differently, is it scary if all of that logging was always on? obviously not as it's agreed upon and detailed in TikTok's privacy policy (really), so why is it scary that there's an on and off switch?This is them saying that remotely configurable logging is fine and normal; I don't think them being able to arbitrarily gather more data is good.

References
  1. BirdLife International (2012). "Irediparra gallinacea". IUCN Red List of Threatened Species. 2012. Retrieved 26 November 2013.CS1 maint: ref=harv (link)
  2. Dutson, Guy. (2011). Birds of Melanesia : Bismarcks, Solomons, Vanuatu and New Caledonia. A & C Black. ISBN 978-1-4081-5246-1. OCLC 770231941.
  3. CRC Handbook of Avian Body Masses by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.
  4. Székely, T.; Reynolds, J.D.; Figuerola, J. (2000), "Sexual Size Dimorphism In Shorebirds, Gulls, And Alcids: The Influence Of Sexual And Natural Selection", Evolution, 54 (4): 1404–1413, doi:10.1554/0014-3820(2000)054[1404:SSDISG]2.0.CO;2CS1 maint: uses authors parameter (link)
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