Wattle (anatomy)

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A rooster's wattles hang from the throat Rooster portrait2.jpg
A rooster's wattles hang from the throat

A wattle is a fleshy caruncle hanging from various parts of the head or neck in several groups of birds and mammals. Caruncles in birds include those found on the face, wattles, dewlaps, snoods, and earlobes. Wattles are generally paired structures but may occur as a single structure when it is sometimes known as a dewlap. Wattles are frequently organs of sexual dimorphism. In some birds, caruncles are erectile tissue and may or may not have a feather covering. [1] [2]

Contents

Wattles are often such a striking morphological characteristic of animals that they feature in their common name. For example, the southern and northern cassowaries are known as the double-wattled and single-wattled cassowary, respectively, and a breed of domestic pig is known as the Red Wattle.

Birds

Function

In birds, wattles are often an ornament for courting potential mates. Large wattles are correlated with high testosterone levels, good nutrition, and the ability to evade predators, which in turn indicates a potentially successful mate. Ornamental organs such as wattles may be associated with genes coding for disease resistance. [3] In umbrellabirds, the wattle serves to amplify the birds' calls. [4]

Examples

Southern hill myna in southern India shows yellow wattles on the head SHMyna DSC9598.jpg
Southern hill myna in southern India shows yellow wattles on the head

Birds with wattles include:

Mammals

Mammals with wattles include:

See also

Related Research Articles

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<span class="mw-page-title-main">Golden pheasant</span> Species of bird

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<span class="mw-page-title-main">Red-wattled lapwing</span> Species of bird

The red-wattled lapwing is an Asian lapwing or large plover, a wader in the family Charadriidae. Like other lapwings they are ground birds that are incapable of perching. Their characteristic loud alarm calls are indicators of human or animal movements and the sounds have been variously rendered as did he do it or pity to do it leading to the colloquial name of did-he-do-it bird. Usually seen in pairs or small groups not far from water, they sometimes form large aggregations in the non-breeding season (winter). They nest in a ground scrape laying three to four camouflaged eggs. Adults near the nest fly around, diving at potential predators while calling noisily. The cryptically patterned chicks hatch and immediately follow their parents to feed, hiding by lying low on the ground or in the grass when threatened.

<i>Anthochaera</i> Genus of birds

Anthochaera is a genus of birds in the honeyeater family. The species are endemic to Australia and include the little wattlebird, the red wattlebird, the western wattlebird, and the yellow wattlebird. A molecular phylogenetic study has shown that the regent honeyeater also belongs in this genus.

<span class="mw-page-title-main">Comb (anatomy)</span> Crest on the top of the head of some gallinaceous birds

A comb is a fleshy growth or crest on the top of the head of some gallinaceous birds, such as domestic chickens. The alternative name cockscomb reflects the fact that combs are generally larger on cock birds than on hens. The comb is one of several fleshy protuberances on the heads of chickens, the others being the wattles and earlobes, which collectively are called caruncles. In turkeys, the caruncles are the fleshy nodules on the head and throat.

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A dewlap is a longitudinal flap of skin or similar flesh that hangs beneath the lower jaw or neck of many vertebrates. More loosely, it can be various similar structures in the neck area, such as those caused by a double chin or the submandibular vocal sac of a frog. More generally, it can be any hanging mass of skin, such as a fold of loose skin on an elderly person's neck, or the wattle of a bird. Dewlaps can be considered as a caruncle, defined as "a small, fleshy excrescence that is a normal part of an animal's anatomy".

<span class="mw-page-title-main">Southern cassowary</span> Species of bird

The southern cassowary, also known as double-wattled cassowary, Australian cassowary, or two-wattled cassowary, is a large flightless black bird, found in Indonesia, Papua New Guinea, and northeastern Australia. It is one of the three living species of cassowary, alongside the dwarf cassowary and the northern cassowary. It is a ratite and therefore related to the emu, ostrich, rhea and kiwi.

<span class="mw-page-title-main">Umbrellabird</span> Genus of birds

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The northern cassowary, also known as the one-wattled cassowary, single-wattled cassowary, or golden-necked cassowary, is a large, stocky flightless bird of northern New Guinea. It is one of the three living species of cassowary, alongside the dwarf cassowary and the southern cassowary. It is a member of the superorder Paleognathae.

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<span class="mw-page-title-main">Three-wattled bellbird</span> Species of bird

The three-wattled bellbird is a Central American migratory bird of the cotinga family. The sexes are very dissimilar in appearance. The male has a white head and throat and the remaining plumage is chestnut brown. From the base of his beak dangle three long, slender, black wattles that he uses in display. The female has olive plumage with yellowish streaked underparts and a yellow vent area.

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

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<span class="mw-page-title-main">Amazonian umbrellabird</span> Species of bird

The Amazonian umbrellabird is a species of bird in the family Cotingidae native to the Amazon basin with a separate population on the eastern slopes of the Andes. The male bird is entirely black, with a black crest and inflatable wattle on the throat, and at 48 to 55 cm, may be the largest passerine bird in South America. The female is slightly smaller. Both have an undulating flight, described as woodpecker-like, and the male has a loud, booming call.

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

The white bellbird is a species of bird in the family Cotingidae. It is the world’s loudest bird, producing vocalizations of up to 125.4 decibels. The specific epithet is often spelled alba, but albus is correct due to the masculine gender of "Procnias". It is found in forests in the Guianas, with small numbers in Venezuela and the Brazilian state of Pará, as well as Trinidad and Tobago and Panama. As in two other members of Procnias, the males have wattles, fleshy structures akin to the red skin flap that hangs from the throat of roosters.

<span class="mw-page-title-main">Caruncle (bird anatomy)</span> Fleshy growth on the head or neck of a bird

A caruncle is defined as 'a small, fleshy excrescence that is a normal part of an animal's anatomy'. Within this definition, caruncles in birds include wattles, combs, snoods, and earlobes. The term caruncle is derived from Latin caruncula, the diminutive of carō, "flesh".

<span class="mw-page-title-main">Frontal shield</span> Type of bird anatomy

A frontal shield, also known as a facial shield or frontal plate, is a feature of the anatomy of several bird species. Located just above the upper mandible, and protruding along the forehead, it is composed of two main parts: a hard, proteinaceous callus and a soft, fleshy corium. It is thought to play roles in protection, mate identification, sexual selection, and territorial defense.

References

  1. John James Audubon, Dean Amadon, John L Bull. 1967 The Birds of America
  2. Richard Bowdler Sharpe. 1888. Catalogue of the Birds in the British Museum, British Natural History Museum, Department of Zoology
  3. Baratti, Mariella; Ammannati, Martina; Magnelli, Claudia; Massolo, Alessandro; Dessì-Fulgheri, Francesco (2010). "Are large wattles related to particular MHC genotypes in the male pheasant?". Genetica. 138 (6): 657–665. doi:10.1007/s10709-010-9440-5. PMID   20145977. S2CID   35053439.
  4. Jane Anson; Michael Broers (2000). The Hutchinson encyclopedia. Oxford: Helicon Publishing Ltd. p. 1087. The Amazonian species Cephalopterus ornatus , the ornate umbrella bird, has an inflatable wattle at the neck to amplify its humming call, and in display elevates a long crest (12 cm - 4 in) lying above the bill so that it rises umbrella-like above ...
  5. Hogan, C. Michael (2008). N. Stromberg (ed.). "Wild Turkey: Meleagris gallopavo". GlobalTwitcher.com.
  6. John White. 1790. Voyage to New South Wales