Knysna turaco

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Knysna turaco
Knysna Turacos.JPG
Pair
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Musophagiformes
Family: Musophagidae
Genus: Tauraco
Species:
T. corythaix
Binomial name
Tauraco corythaix
(Wagler, 1827)
Knysna Turaco's distribution (habitat) 2010 map.png
Range of the Knysna turaco: subspp. corythaix (south) and phoebus (north)

The Knysna turaco (Tauraco corythaix), or, in South Africa, Knysna loerie, is a large turaco, one of a group of African musophagidae birds. It is a resident breeder in the mature evergreen forests of southern and eastern South Africa, and Eswatini. It was formerly sometimes considered to be a subspecies of the green turaco of West Africa. The Livingstone's and Schalow's turacos were once considered subspecies. [2]

Contents

This species lays two eggs in a shallow platform nest made from sticks and placed in a tree or clump of creepers.

Within its range, this is an unmistakable bird, although often inconspicuous in the treetops. It is 40–42 cm long, including a long tail. The small but thick orange-red bill and a white line just under the eye contrast with the mainly green plumage. It has a tall green crest, which is tipped with white. The eye is brown and the eye-ring deep red. In flight, Knysna turaco shows conspicuous crimson primary flight feathers. Sexes are similar, but juvenile birds have a shorter crest without the white tips.

The Knysna turaco is usually seen flying between forest trees, or hopping along branches. It feeds on fruit, insects and earthworms. It has a loud kow-kow-kow-kow call.

This bird family is known as Loeries in South Africa, but the international name is Turaco. Turacos (the 10 species of the Tauraco and the 2 of the Musophaga) are the only birds to possess true red and green colour. When you look at most birds, the color you are seeing is a reflection produced by the feather structure. The turaco's red pigment (turacin) and green pigment (turacoverdin) both contain copper. In fact, if you stirred a glass of water with a red turaco feather, the water would turn pink! In museum species, the pigments deepen with age because the copper begins to oxidize. These birds manage to maintain their colours throughout the year. The Knysna Loerie is thought to use its red wing feathers to escape predators. Indeed, when it flies, the predators tend to focus on the most visible colour and follow the red patch. As the Loerie lends and folds its wings, the red feathers of the wings become invisible and the Loerie has a chance of escaping unseen. [3]

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Related Research Articles

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<span class="mw-page-title-main">Guinea turaco</span> Species of bird

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<span class="mw-page-title-main">Black-billed turaco</span> Species of bird

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<i>Tauraco</i> Genus of birds

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<span class="mw-page-title-main">White-cheeked turaco</span> Species of bird

The white-cheeked turaco is a species of bird in the family Musophagidae. It is found in Eritrea, Ethiopia, and South Sudan. A mid-sized species, it measures about 43 cm (17 in) in length, including a tail of 19 cm (7.5 in), and weighs about 200–315 g (7.1–11.1 oz). This species is the most commonly raised turaco in captive conditions.

<span class="mw-page-title-main">Livingstone's turaco</span> Species of bird

Livingstone's turaco is a species of bird in the family Musophagidae, which was named for Charles Livingstone, the brother of David Livingstone.

<span class="mw-page-title-main">Purple-crested turaco</span> Species of bird

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<span class="mw-page-title-main">Turacoverdin</span>

Turacoverdin is a unique copper uroporphyrin pigment responsible for the bright green coloration of several birds of the family Musophagidae, most notably the turaco. It is chemically related to turacin, a red pigment also found almost exclusively in turacos. Turacoverdin is one of the only true green pigments found in birds, as the coloration that appears in most green feathers is due to the unique properties of blue structural coloration in combination with yellow carotenoids. Turacoverdin and turacin were the first ever chemically characterized feather pigments, and turacoverdin was first isolated and described in 1882 by Dr. C.F.W. Krukenberg.

References

  1. BirdLife International (2018). "Tauraco corythaix". IUCN Red List of Threatened Species . 2018: e.T22688335A130124892. doi: 10.2305/IUCN.UK.2018-2.RLTS.T22688335A130124892.en . Retrieved 12 November 2021.
  2. Roberts 6
  3. "Knysna Loerie". birdsofeden.co.za. Retrieved 23 July 2020.