The kelp goose has two subspecies, the nominateC. h. hybrida and C. h. malvinarum.[2]
Female on left, male on right
Descriptionedit
The kelp goose is 55 to 65 cm (22 to 26 in) long. Males of the nominate subspecies weigh 2.54 to 2.58 kg (5.6 to 5.7 lb) and females 2.00 to 2.02 kg (4.4 to 4.5 lb). Subspecies C. h. malvinarum is heavier: Males weigh 3.25 to 3.60 kg (7.2 to 7.9 lb) and females 2.05 to 2.80 kg (4.5 to 6.2 lb). The two subspecies have the same plumage but the sexes are completely different. Adult males are entirely white but for a black bill with a pink spot on the maxilla and yellow legs and feet. Adult females have a pale brown crown and chocolate brown head, neck, and mantle. Their breast and flanks have black and white bars and their back, tail, and undertail coverts are white. Their bill is pink and their legs and feet yellow. Juvenile males resemble adult females but with brown "shoulders" and greenish-yellow legs and feet. Juvenile females have a dark crown and dark uppertail coverts.[4]
Distribution and habitatedit
The nominate subspecies of kelp goose is found on coastal southern Chile and Argentina including the Tierra del Fuego archipelago. C. h. malvinarum is found only on the Falkland Islands. Except when nesting, the species inhabits rocky coasts or shingle beaches with kelp beds offshore. It nests at coastal freshwater lakes.[4]
Behavioredit
Movementedit
The nominate subspecies of kelp goose is found year-round along the southern Chile coast and in Tierra del Fuego. It is mostly sedentary, with some individuals moving further north in Chile and others north along the Atlantic coast of Argentina in the austral winter. C. h. malvinarum is also mostly sedentary throughout the Falklands, but some individuals move from more exposed offshore islands to larger ones in winter.[4]
Feedingedit
The kelp goose is almost entirely vegetarian, though it probably ingests small invertebrates incidentally. It forages mostly by grazing though it sometimes dips under water to feed. On the coast it feeds on several species of seaweed and some algae. During breeding it feeds on grass and in winter sometimes on berries. During the summer, 100 or more non-breeding geese may gather on the shore.[4]
Breedingedit
The kelp goose's breeding season (up to hatching) on the mainland extends from October to January; that on the Falklands begins somewhat sooner and extends only to November. The species nests in pairs or loose groups. It builds a nest of grass lined with down, on the mainland near somewhat inland freshwater lakes and on the Falklands close to the shore. Nests are sited in vegetation or beside a boulder or driftwood. The clutch size is three to seven eggs. Males guard females during the incubation period of about 30 days. Young leave the nest shortly after the last egg hatches and fledging occurs 12 to 13 weeks after hatch. Both parents care for the young into winter.[4]
Songs and calls
Listen to kelp goose on xeno-canto
Vocalizationedit
Male and female kelp geese have different vocalizations: Males make a "whistled 'si-si-si'" and females "low honking 'arnk-arnk', 'ooer' or 'ooeroo' calls". Very young chicks make "a double-noted 'cheep'."[4]
Statusedit
The IUCN has assessed the kelp goose as being of Least Concern. It has a large range, and though its population size is unknown it is believed to be stable. No immediate threats have been identified.[1] It "does not compete with human interests due to inaccessibility and [the] types of habitats preferred" but "[c]ould be at risk from spillage of oil or other toxic substances on rocky coasts."[4]
Two females, one male, and two juveniles on Chiloé Island, Chile.
Referencesedit
Wikimedia Commons has media related to Chloephaga hybrida.
Wikispecies has information related to Chloephaga hybrida.
^ abBirdLife International (2016). "Kelp Goose Chloephaga hybrida". IUCN Red List of Threatened Species. 2016: e.T22679978A92837056. doi:10.2305/IUCN.UK.2016-3.RLTS.T22679978A92837056.en. Retrieved 12 November 2021.
^ abGill, F.; Donsker, D.; Rasmussen, P., eds. (August 2022). "Screamers, ducks, geese, swans". IOC World Bird List. v 12.2. Retrieved August 9, 2022.
^ abcdefgCarboneras, C. and G. M. Kirwan (2020). Kelp Goose (Chloephaga hybrida), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.kelgoo1.01 retrieved September 28, 2022
External linksedit
Stamps
January 05, 2024
kelp, goose, kelp, goose, chloephaga, hybrida, species, waterfowl, tribe, tadornini, subfamily, anserinae, found, argentina, chile, falkland, islands, conservation, statusleast, concern, iucn, scientific, classificationdomain, eukaryotakingdom, animaliaphylum,. The kelp goose Chloephaga hybrida is a species of waterfowl in tribe Tadornini of subfamily Anserinae It is found in Argentina Chile and the Falkland Islands 2 3 Kelp gooseConservation statusLeast Concern IUCN 3 1 1 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass AvesOrder AnseriformesFamily AnatidaeGenus ChloephagaSpecies C hybridaBinomial nameChloephaga hybrida Molina 1782 SubspeciesC h hybrida Molina 1782 C h malvinarum Phillips 1916 Contents 1 Taxonomy and systematics 2 Description 3 Distribution and habitat 4 Behavior 4 1 Movement 4 2 Feeding 4 3 Breeding 4 4 Vocalization 5 Status 6 Gallery 7 References 8 External linksTaxonomy and systematics editThe kelp goose has two subspecies the nominate C h hybrida and C h malvinarum 2 nbsp Female on left male on rightDescription editThe kelp goose is 55 to 65 cm 22 to 26 in long Males of the nominate subspecies weigh 2 54 to 2 58 kg 5 6 to 5 7 lb and females 2 00 to 2 02 kg 4 4 to 4 5 lb Subspecies C h malvinarum is heavier Males weigh 3 25 to 3 60 kg 7 2 to 7 9 lb and females 2 05 to 2 80 kg 4 5 to 6 2 lb The two subspecies have the same plumage but the sexes are completely different Adult males are entirely white but for a black bill with a pink spot on the maxilla and yellow legs and feet Adult females have a pale brown crown and chocolate brown head neck and mantle Their breast and flanks have black and white bars and their back tail and undertail coverts are white Their bill is pink and their legs and feet yellow Juvenile males resemble adult females but with brown shoulders and greenish yellow legs and feet Juvenile females have a dark crown and dark uppertail coverts 4 Distribution and habitat editThe nominate subspecies of kelp goose is found on coastal southern Chile and Argentina including the Tierra del Fuego archipelago C h malvinarum is found only on the Falkland Islands Except when nesting the species inhabits rocky coasts or shingle beaches with kelp beds offshore It nests at coastal freshwater lakes 4 Behavior editMovement edit The nominate subspecies of kelp goose is found year round along the southern Chile coast and in Tierra del Fuego It is mostly sedentary with some individuals moving further north in Chile and others north along the Atlantic coast of Argentina in the austral winter C h malvinarum is also mostly sedentary throughout the Falklands but some individuals move from more exposed offshore islands to larger ones in winter 4 Feeding edit The kelp goose is almost entirely vegetarian though it probably ingests small invertebrates incidentally It forages mostly by grazing though it sometimes dips under water to feed On the coast it feeds on several species of seaweed and some algae During breeding it feeds on grass and in winter sometimes on berries During the summer 100 or more non breeding geese may gather on the shore 4 Breeding edit The kelp goose s breeding season up to hatching on the mainland extends from October to January that on the Falklands begins somewhat sooner and extends only to November The species nests in pairs or loose groups It builds a nest of grass lined with down on the mainland near somewhat inland freshwater lakes and on the Falklands close to the shore Nests are sited in vegetation or beside a boulder or driftwood The clutch size is three to seven eggs Males guard females during the incubation period of about 30 days Young leave the nest shortly after the last egg hatches and fledging occurs 12 to 13 weeks after hatch Both parents care for the young into winter 4 nbsp Songs and callsListen to kelp goose on xeno canto Vocalization edit Male and female kelp geese have different vocalizations Males make a whistled si si si and females low honking arnk arnk ooer or ooeroo calls Very young chicks make a double noted cheep 4 Status editThe IUCN has assessed the kelp goose as being of Least Concern It has a large range and though its population size is unknown it is believed to be stable No immediate threats have been identified 1 It does not compete with human interests due to inaccessibility and the types of habitats preferred but c ould be at risk from spillage of oil or other toxic substances on rocky coasts 4 Gallery edit nbsp Female on East Falkland nbsp A pair on East Falkland nbsp Two females one male and two juveniles on Chiloe Island Chile References edit nbsp Wikimedia Commons has media related to Chloephaga hybrida nbsp Wikispecies has information related to Chloephaga hybrida a b BirdLife International 2016 Kelp Goose Chloephaga hybrida IUCN Red List of Threatened Species 2016 e T22679978A92837056 doi 10 2305 IUCN UK 2016 3 RLTS T22679978A92837056 en Retrieved 12 November 2021 a b Gill F Donsker D Rasmussen P eds August 2022 Screamers ducks geese swans IOC World Bird List v 12 2 Retrieved August 9 2022 HBW and BirdLife International 2021 Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world Version 6 Available at http datazone birdlife org userfiles file Species Taxonomy HBW BirdLife Checklist v6 Dec21 zip retrieved August 7 2022 a b c d e f g Carboneras C and G M Kirwan 2020 Kelp Goose Chloephaga hybrida version 1 0 In Birds of the World J del Hoyo A Elliott J Sargatal D A Christie and E de Juana Editors Cornell Lab of Ornithology Ithaca NY USA https doi org 10 2173 bow kelgoo1 01 retrieved September 28 2022External links editStamps Retrieved from https en wikipedia org w index php title Kelp goose amp oldid 1114994036, wikipedia, wiki, book, books, library,
