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Red-bellied Woodpecker

Melanerpes carolinus

Summary 71

The red-bellied woodpecker (Melanerpes carolinus) is a medium-sized woodpecker of the family Picidae. It breeds mainly in the eastern United States, ranging as far south as Texas and as far north as Canada. Its common name is somewhat misleading, as the most prominent red part of its plumage is on the head; the red-headed woodpecker, however, is another species that is a rather close relative but looks quite different.

Behavior and ecology 72

In early May, the red-bellied woodpeckers begin breeding activities by drumming patterns; such as, slow taps followed by short rapid drumming. The red-bellied woodpeckers use vocal signals to attract and communicate with potential mates. A low "grr, grr" sound is observed in a pair of woodpeckers from the start of courtship until the end of the breeding season. In an intraspecific conflict, the red-bellied woodpeckers usually make a loud "chee-wuck, chee-wuck, chee-wuck" sound. As indicated by Kilham 1983, the red-bellied woodpecker drums with its bill during conflict situation and taps to maintain pair bonding. An example of a conflict event between red-bellied woodpeckers would be competing for the same mate. Nevertheless, the red-bellied woodpeckers are known to be in monogamous relationships. They have been known to rapidly peck on aluminum gutters of houses to produce a loud noise in order to attract females.

Woodpeckers depend on dead and drying wood for nesting purposes. The male red-bellied woodpecker takes the initiative in locating a nest hole. He will then seek approval from his female mate by mutual tapping. The red-bellied woodpecker excavates holes in trees for nesting and roosting. By excavating cavities, they play an important role in the forest communities for other species as well. For example, species such as squirrels and bats use these cavities as shelter. The female red-bellied woodpecker accepts the nesting hole by completing the excavation and entering the nest hole.

Researchers have documented that red-bellied woodpeckers have the tendency to nest in clear areas with only few trees. Studies have indicated that close canopy areas does not impact the bird's nesting behavior; however, further studies are needed and are in progress. Red-bellied woodpeckers are territorial during the nesting season and they breed once per year. A pair-breeding woodpecker begins nesting in April or May holding a year-round territories and showing high site fidelity.

Red-bellied woodpeckers depend on dead trees for nesting. Recent studies have shown that these woodpeckers experienced low breeding due to cutting sites of dead trees; however, predators are still of main concern. The juvenile red-bellied woodpecker are ready to fledge its nest at 24 to 26 days of age. Natal dispersal has been observed on juvenile red-bellied woodpeckers. The juvenile red-bellied woodpecker remains approximately 27 weeks in its natal area after fledging. In some cases, the woodpecker may return to its natal area for breeding depending on predation levels and food resources.

Breeding 72

In early May, the red-bellied woodpeckers begin breeding activities by drumming patterns; such as, slow taps followed by short rapid drumming. The red-bellied woodpeckers use vocal signals to attract and communicate with potential mates. A low "grr, grr" sound is observed in a pair of woodpeckers from the start of courtship until the end of the breeding season. In an intraspecific conflict, the red-bellied woodpeckers usually make a loud "chee-wuck, chee-wuck, chee-wuck" sound. As indicated by Kilham 1983, the red-bellied woodpecker drums with its bill during conflict situation and taps to maintain pair bonding. An example of a conflict event between red-bellied woodpeckers would be competing for the same mate. Nevertheless, the red-bellied woodpeckers are known to be in monogamous relationships. They have been known to rapidly peck on aluminum gutters of houses to produce a loud noise in order to attract females.

Woodpeckers depend on dead and drying wood for nesting purposes. The male red-bellied woodpecker takes the initiative in locating a nest hole. He will then seek approval from his female mate by mutual tapping. The red-bellied woodpecker excavates holes in trees for nesting and roosting. By excavating cavities, they play an important role in the forest communities for other species as well. For example, species such as squirrels and bats use these cavities as shelter. The female red-bellied woodpecker accepts the nesting hole by completing the excavation and entering the nest hole.

Researchers have documented that red-bellied woodpeckers have the tendency to nest in clear areas with only few trees. Studies have indicated that close canopy areas does not impact the bird's nesting behavior; however, further studies are needed and are in progress. Red-bellied woodpeckers are territorial during the nesting season and they breed once per year. A pair-breeding woodpecker begins nesting in April or May holding a year-round territories and showing high site fidelity.

Red-bellied woodpeckers depend on dead trees for nesting. Recent studies have shown that these woodpeckers experienced low breeding due to cutting sites of dead trees; however, predators are still of main concern. The juvenile red-bellied woodpecker are ready to fledge its nest at 24 to 26 days of age. Natal dispersal has been observed on juvenile red-bellied woodpeckers. The juvenile red-bellied woodpecker remains approximately 27 weeks in its natal area after fledging. In some cases, the woodpecker may return to its natal area for breeding depending on predation levels and food resources.

Description 72

Adults are mainly light gray on the face and underparts; they have black and white barred patterns on their back, wings and tail. Adult males have a red cap going from the bill to the nape; females have a red patch on the nape and another above the bill. The reddish tinge on the belly that gives the bird its name is difficult to see in field identification. They are 22.85 to 26.7 cm (9.00 to 10.51 in) long, have a wingspan of 38 to 46 cm (15 to 18 in), and weigh from 2.0-3.2 oz (56-91 g).

Red-bellied woodpeckers are noisy birds, and have many varied calls. Calls have been described as sounding like churr-churr-churr or thrraa-thrraa-thrraa with an alternating br-r-r-r-t sound. Males tend to call and drum more frequently than females, but both sexes call. The drum sounds like 6 taps. Often, these woodpeckers "drum" to attract mates. They tap on hollow trees, and even on aluminum roofs, metal guttering and transformer boxes in urban environments, to communicate with potential partners. Babies have a high-pitched begging call of pree-pree-pree. They will continue to give a begging call whenever they see their parents for a while after fledging.

These birds mainly search out arthropods on tree trunks. They may also catch insects in flight. They are omnivores, eating insects, fruits, nuts and seeds. Their breeding habitat is usually deciduous forests. They nest in the decayed cavities of dead trees, old stumps, or in live trees that have softer wood such as elms, maples, or willows; both sexes assist in digging nesting cavities. Areas around nest sites are marked with drilling holes to warn others away.

Though the species is not globally threatened, it depends on large trees for nesting. In areas that are extensively deforested, the birds will sometimes utilize gardens, but for the most part they simply will not be present in any numbers.

Food and feeding 72

As with all animals, foraging becomes an important role in an animal's ability to survive and reproduce. The red-bellied woodpecker expresses foraging behavior by catching or storing food. The woodpecker uses its bill for foraging as a chisel drilling into bark or probing cracks on trunk of trees. In this manner, the red-bellied woodpecker is able to pull out beetles and other insects from the tree with the help of its long tongue. This behavior is also seen for storing food from other animals by hiding food behind bark or deep in cracks of a tree. According to studies from Williams 1975, Breitwisch 1977, and Batzil 1979, the red-bellied woodpecker spent 20% to 69% foraging on dead or decaying trees. In addition, Williams 1975, Breitwisch 1977, and Batzil 1979 observed red-bellied woodpecker 80% gleaning and probing and 10% excavating on trees in South Florida pine habitat. The red-bellied woodpecker relies on snags or dying trees for foraging and nesting. The red-bellied woodpecker is a major predator of the invasive emerald ash borer in the U.S. Midwest, removing up to 85 percent of borer larvae in a single infested ash tree.

Predation 72

Predators of adult red-bellied woodpeckers include birds of prey such as sharp-shinned hawks and Cooper's hawks, black rat snakes and house cats. Known predators of nestlings and eggs include red-headed woodpeckers, owls, pileated woodpeckers, gray rat snakes and black rat snakes. When approached by a predator, red-bellied woodpeckers either hide from the predator, or harass it with alarm calls. They defend their nests and young aggressively, and may directly attack predators that come near the nest.

Summary 73

The red-bellied woodpecker (Melanerpes carolinus) is a medium-sized woodpecker of the family Picidae. It breeds mainly in the eastern United States, ranging as far south as Florida and as far north as Canada. Its common name is somewhat misleading, as the most prominent red part of its plumage is on the head; the red-headed woodpecker, however, is another species that is a rather close relative but looks quite different.

Taxonomy 72

The English naturalist Mark Catesby described and illustrated the red-bellied woodpecker in his book The Natural History of Carolina, Florida and the Bahama Islands which was published between 1729 and 1732. Catesby used the English name "The Red-bellied Wood-pecker" and the Latin Picus ventre rubro. When in 1758 the Swedish naturalist Carl Linnaeus updated his Systema Naturae for the tenth edition, he included the red-bellied woodpecker, coined the binomial namePicus carolinus and cited Catesby's book. Linnaeus specified the type locality as America septentrionali, (North America). The locality is now restricted to South Carolina. The red-bellied woodpecker is one of 24 species now placed in the genusMelanerpes that was introduced by the English ornithologist William John Swainson in 1832. The species is monotypic: no subspecies are recognised.

Vocalizations 72

Red-bellied woodpeckers are noisy birds, and have many varied calls. Calls have been described as sounding like churr-churr-churr or thrraa-thrraa-thrraa with an alternating br-r-r-r-t sound. Males tend to call and drum more frequently than females, but both sexes call. The drum sounds like 6 taps. Often, these woodpeckers "drum" to attract mates. They tap on hollow trees, and even on aluminum roofs, metal guttering and transformer boxes in urban environments, to communicate with potential partners. Babies have a high-pitched begging call of pree-pree-pree. They will continue to give a begging call whenever they see their parents for a while after fledging.

These birds mainly search out arthropods on tree trunks. They may also catch insects in flight. They are omnivores, eating insects, fruits, nuts and seeds. Their breeding habitat is usually deciduous forests. They nest in the decayed cavities of dead trees, old stumps, or in live trees that have softer wood such as elms, maples, or willows; both sexes assist in digging nesting cavities. Areas around nest sites are marked with drilling holes to warn others away.

Though the species is not globally threatened, it depends on large trees for nesting. In areas that are extensively deforested, the birds will sometimes utilize gardens, but for the most part they simply will not be present in any numbers.

Description 74

• Size: 9 ½ inches long, 2-3 ¼ ounces, 13-16 ½ inch wingspan
• Color: pale overall, black-and-white striped back, red cap and nape, females lack red cap, red blush on belly is difficult to see
• Sound: shrill, rolling kwirr or churr
• Reproduction: excavate a cavity nest in dead trees
• Food: Insects
• Behavior: Bark forager
• Habitat: Forests

Fontes e Créditos

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