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Lilac-crowned amazon

Lilac-crowned amazon
At Xcaret Eco Park, Mexico
CITES Appendix I (CITES)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Psittaciformes
Family: Psittacidae
Genus: Amazona
Species:
A. finschi
Binomial name
Amazona finschi
(Sclater, PL, 1864)

The lilac-crowned amazon (Amazona finschi), also known as lilac-crowned parrot, Finsch's parrot or Finsch's amazon, is a parrot endemic to the Pacific slopes of Mexico. Also known as Finsch's amazon, it is characterised by green plumage, a maroon forehead, and a violet-blue crown and neck.

In 2006, BirdLife International classified this species as vulnerable. In 2014, IUCN uplisted this species to Endangered.[1]

The species name of this bird, finschi, commemorates the German naturalist and explorer Otto Finsch.

Description

Lilac-crowned amazons in a U.S. Zoo

The plumage of an adult lilac-crowned amazon is primarily green with yellowish underparts and black edging. The forehead is a maroon colour with a light blue-lilac neck, nape, and crown. The cheeks and ear coverts are a greenish yellow that lacks the edging that is present in most of the plumage. The primary feathers are dark blue with the secondary feathers being green while being tipped with the same dark blue colouring. Furthermore, the initial five secondary feathers have a bright red speculum on the edge of the feathers. The wing coverts, the underside of the flight feathers, and the tail are green while the tail is tipped with a yellowish colouring similar to that of the cheeks and ear coverts. Their beak, orbital rings, and legs are a pale brown-grey colouring. The irides of adult lilac-crowned parrots are amber-coloured.[3]

Juvenile lilac-crowned amazons are visually similar to their adult forms except for minor differences. One difference is that the iris of juveniles is a dark brown as opposed to the amber colouring that is found in adults.[3][4] The other major difference is that there less maroon coloured feathers on the forehead of juveniles. After about one-year juveniles begin to acquire these adult features.[4]

Range and habitat

The lilac-crowned amazon's endemic range spans along the pacific coast of Mexico, beginning in southeastern Sonora and southwestern Chihuahua down to southern Oaxaca.[4] In Sinaloa and northern Nayarit the geographic range of the lilac-crowned parrot is above 375 meters of elevation; the range does not descend to sea level until southern Nayarit, where it remains so through Jalisco and Oaxaca.[4][5]

The lilac-crowned amazon's natural habitat in Mexico is often threatened. The decline in population size has been recorded in almost all of its natural habitat locations.[5] Based on a collection of data and resident accounts, Amazona finschi population range has decreased by 20% due to habitat loss.[6]

An increasingly growing population of approximately 100 individuals is found in Southern California, especially in the San Gabriel Valley and Orange Country.[7] This increase could also be attributed to a more reliable source of measurement of population than in past years.[8] These populations often are found in residential areas and occasionally in nesting groups with red-crowned parrots in native conifer forests or non-native captive plants.[7]

Breeding

The lilac-crowned amazon's breeding season is from February to June.[3] They have a 28 day incubation period and a 60 day period of nestling growth.[3][9][10] They tend to nest in the natural cavities of trees in dry forests.[9] Females have a clutch size ranging from 1–4 eggs which usually results in an average brood size of 1.8 nestlings and a reproductive output of 0.99 fledglings per egg-laying female.[11] Ultimately outcomes of reproductive efforts result in 0.70 independent young per egg-laying pair.[12]

These low success rates could be attributed to the climate variability in dry forests, which could have an effect on clutch size, reproductive output and success.[11][12]

Aviculture

Hand-reared lilac-crowned amazons can be quite friendly in captivity and can learn quite a vocabulary, even though they are not known as talkers. They make good companion parrots.[citation needed]

References

  1. ^ a b "Amazona finschi". IUCN Red List of Threatened Species. 2020. BirdLife International: e.T22686268A179290500. 12 November 2021 [2020]. doi:10.2305/IUCN.UK.2020-3.RLTS.T22686268A179290500.en. Retrieved 12 November 2021.
  2. ^ "Appendices". cites.org. CITES. Retrieved 2022-01-14.
  3. ^ a b c d Forshaw, Joseph Michael; Cooper, William T. (1989). Parrots of the World (3rd ed.). London, UK: Blandford. ISBN 0713721340. OCLC 19352622.
  4. ^ a b c d Howell, Steve N.G.; Webb, Sophie (1995). A guide to the Birds of Mexico and Northern Central America. Oxford, UK: Oxford University Press. ISBN 0198540132. OCLC 28799888.
  5. ^ a b Renton, Katherine; Iñigo-Elias, Eduardo (2003). Evaluation of the current status of lilac-crown parrot (Amazona finschi) populations in Mexico (PDF) (unpublished data) – via CONABIO.gob.mx.
  6. ^ Rios Muñoz, Cesar Antonio (2002). Caracterización geográfica de la familia Psittacidae (Aves) utilizando un modelo predictivo [Geographic characterization of the family Psittacidae (Aves) using a predictive model] (Licenciatura en Biología thesis) (in Spanish). Mexico City, MX: Universidad Nacional Autonoma de Mexico.
  7. ^ a b Garret, Kimball L. (December 1997). "Population status and distribution of naturalised parrots in southern California" (PDF). Western Birds. 28 (4): 181–195 – via westernfieldornithologists.org.
  8. ^ Mabb, Karen (2003). Naturalized parrot roost flock characteristics and habitat utilization in a suburban area of Los Angeles County, California (M.S. thesis). San Luis Obispo, CA: California State Polytechnic University.
  9. ^ a b Renton, K.; Salinas-Melgoza, A. (1999). "Nesting behaviour of the lilac-crowned parrot". The Wilson Journal of Ornithology (Wilson Bulletin). 111: 488–493.
  10. ^ Renton, K. (2002). "Influence of environmental variability on the growth of Lilac-crowned Parrot nestlings". Ibis. 144: 331–339.
  11. ^ a b Renton, K.; Salinas-Melgoza, A. (2004). "Climatic variability, nest predation, and reproductive output of lilac-crowned parrots (Amazona finschi) in the tropical dry forest of western Mexico". Auk. 121: 1214–1225.
  12. ^ a b Salinas-Melgoza, A.; Renton, K. (2007). "Post-fledging survival and development of juvenile lilac-crowned parrots". Journal of Wildlife Management. 71: 43–50.
Quelle: http://en.wikipedia.org/wiki/Amazona_finschi