Floreana mockingbird | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Mimidae |
Genus: | Mimus |
Species: | M. trifasciatus |
Binomial name | |
Mimus trifasciatus (Gould, 1837) | |
Synonyms | |
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The Floreana mockingbird (Mimus trifasciatus) or the Charles Island mockingbird, is a species of bird in the family Mimidae. It was endemic to Floreana, one of the Galápagos Islands, but now is found only on two nearby islets, Campeón and Gardner-near-Floreana. [2] [3] [4] The Floreana mockingbird is also known as Darwin's mockingbird, as it was the arguable inspiration for Charles Darwin's work on the origins of species; he noticed distinct differences between them and previous species he had encountered and consequently established the existence of other variants on neighboring islands. [5]
The Floreana mockingbird, Galapagos mockingbird (Mimus parvulus), Espanola mockingbird (M. macdonaldi), and San Cristobal mockingbird (M. melanotis) were previously placed in genus Nesomimus and were considered conspecific. They now form a superspecies. The Floreana mockingbird is monotypic. [2] [3] [4]
The Floreana mockingbird is 25 to 26 cm (9.8 to 10.2 in) long. Males weigh an average of 65.7 g (2.32 oz) and females 59.8 g (2.11 oz). Adults have a pied appearance. They have a pale supercilium, a black patch in front of the eye, a darkish one below it, and white cheeks. Their crown, upperparts, and tail are grayish brown with a few faint darker streaks. Their whitish underparts have a dark patch on the side of the breast and faint spots on the breast and flanks. The folded wing shows two white bars. The juvenile is similar to the adult but more heavily streaked. [3]
The Floreana mockingbird was formerly abundant on Floreana Island but had been extirpated from there by 1888. It now occurs only on two islets off Floreana's shore, Campeón and Gardner-near-Floreana. The islets provide a habitat of low vegetation along their shores and arid scrub with cacti and a few trees inland. [3]
The Floreana mockingbird mostly forages on the ground, but also in vegetation. It is primarily insectivorous but also eats cactus fruit, carrion, and probably seabird eggs. [3]
The Floreana mockingbird's breeding season spans from October to April and two broods are usual. It is a cooperative breeder with up to five adults in each territory of about 2 ha (4.9 acres). The nest is a cup made of twigs lined with finer material; it is almost always placed in a cactus. The clutch size is two to four. [3]
The Floreana mockingbird has a "[l]oud, melodious song [and] does not mimic other species." [3]
The IUCN in 1994 initially assessed the Floreana mockingbird as Endangered. In 2008 it was reclassified as Critically Endangered but then in 2017 returned to Endangered status. It was extirpated from Floreana by 1888; introduced rats, mice, cats, dogs, and goats have all been implicated as causes. The population on the two islets has fluctuated with the presence or absence of El Niño events but is believed to exceed 250 individuals and be stable. [1] [3]
Studies are under way to attempt to reintroduce the Floreana mockingbird to the main island. These include assessments of Floreana's habitat and the status of the introduced predators and competitors. [6] [7]
The Galápagos Islands are an archipelago of volcanic islands in the Eastern Pacific, located around the Equator 900 km (560 mi) west of the mainland of South America. They form the Galápagos Province of the Republic of Ecuador, with a population of slightly over 33,000 (2020). The province is divided into the cantons of San Cristóbal, Santa Cruz, and Isabela, the three most populated islands in the chain. The Galápagos are famous for their large number of endemic species, which were studied by Charles Darwin in the 1830s and inspired his theory of evolution by means of natural selection. All of these islands are protected as part of Ecuador's Galápagos National Park and Marine Reserve.
The mimids are the New World family of passerine birds, Mimidae, that includes thrashers, mockingbirds, tremblers, and the New World catbirds. As their name suggests, these birds are notable for their vocalization, especially some species' remarkable ability to mimic a wide variety of birds and other sounds heard outdoors. They are commonly referred to as mimic thrushes but are not, in fact, thrushes.
Mockingbirds are a group of New World passerine birds from the family Mimidae. They are best known for the habit of some species mimicking the songs of other birds and the sounds of insects and amphibians, often loudly and in rapid succession and for being extremely territorial when raising hatchlings. Studies have shown the ability of some species to identify individual humans and treat them differently based on learned threat assessments.
Darwin's finches are a group of about 18 species of passerine birds. They are well known for being a classic example of adaptive radiation and for their remarkable diversity in beak form and function. They are often classified as the subfamily Geospizinae or tribe Geospizini. They belong to the tanager family and are not closely related to the true finches. The closest known relative of the Galápagos finches is the South American dull-coloured grassquit. They were first collected when the second voyage of the Beagle visited the Galápagos Islands, with Charles Darwin on board as a gentleman naturalist. Apart from the Cocos finch, which is from Cocos Island, the others are found only on the Galápagos Islands.
The tropical mockingbird is a resident breeding bird from southern Mexico to northern and eastern South America and in the Lesser Antilles and other Caribbean islands.
Floreana Island is a southern island in Ecuador's Galápagos Archipelago. The island has an area of 173 km2 (67 sq mi). It was formed by volcanic eruption. The island's highest point is Cerro Pajas at 640 m (2,100 ft), which is also the highest point of the volcano like most of the smaller islands of Galápagos. The island has a population of about 100.
The dark-billed cuckoo is a species of bird in the tribe Phaenicophaeini, subfamily Cuculinae of the cuckoo family Cuculidae. It is regularly found in every mainland South American country except Chile plus the Galápagos Islands. It has also occurred as a vagrant in Chile and several other countries and islands.
The paint-billed crake is a species of bird in the subfamily Rallinae of the rail, crake, and coot family Rallidae. It is found in Costa Rica, Panama, every mainland South American country except Chile and Uruguay, and the Galápagos Islands.
Apolinar's wren is a passerine bird in the family Troglodytidae. It is endemic to Colombia.
The brown-backed mockingbird is a species of bird in the family Mimidae. It is found in Argentina and Bolivia.
Mimus is a bird genus in the family Mimidae. It contains the typical mockingbirds. In 2007, the genus Nesomimus was merged into Mimus by the American Ornithologists' Union. The genus name is Latin for "mimic".
The Bahama mockingbird is a species of bird in the family Mimidae. It is found in the Bahamas, Cuba, Jamaica and the Turks and Caicos Islands, and is a vagrant to Florida.
The long-tailed mockingbird is a species of bird in the family Mimidae. It is found in Ecuador and Peru.
The Patagonian mockingbird is a species of bird in the family Mimidae. It is found in much of Argentina and locally in Chile.
The white-banded mockingbird is a species of bird in the family Mimidae. It is found in Argentina, Bolivia, Brazil, Chile, Paraguay, and Uruguay.
The Hood mockingbird, also known as the Española mockingbird, is a species of bird in the family Mimidae. It is endemic to Española Island in the Galápagos Islands, Ecuador, and it is one of four closely related mockingbird species endemic to the Galápagos archipelago. It is found in dry forests and is omnivorous, though it primarily is a carnivore or scavenger. The species has a highly territorial social structure and has no fear of humans. It is the only species of Galápagos mockingbird that Charles Darwin did not see or collect on the voyage of HMS Beagle.
The San Cristóbal mockingbird or Chatham mockingbird, is a species of bird in the family Mimidae. It is endemic to San Cristóbal Island in the Galápagos Islands.
The Galápagos mockingbird is a species of bird in the family Mimidae. It is endemic to the Galápagos Islands, Ecuador.