Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
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Source: IUCN

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Life History and Behavior

Life Expectancy

Lifespan, longevity, and ageing

Maximum longevity: 14 years (captivity) Observations: One specimen lived for 14 years in captivity (Brouwer et al. 2000). Considering the longevity of similar species, however, maximum longevity could be underestimated in this species.
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
BirdLife International

Reviewer/s
Bird, J., Butchart, S.

Contributor/s

Justification
Although this species may have a restricted range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

History
  • 2008
    Least Concern
  • 2004
    Least Concern
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Population

Population
The global population size has not been quantified, but the species is reported to be locally common (del Hoyo et al. 1997).
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Wikipedia

Layard's Parakeet

The Layard's Parakeet (Psittacula calthropae) is a parrot which is a resident endemic breeder in Sri Lanka. The common name of this bird commemorates the British naturalist Edgar Leopold Layard; his first wife, Barbara Anne Calthrop, whom he married in 1845, is commemorated in the specific epithet.

Contents

Description

PsittaculaCalthropaeLegge.jpg

Layard's Parakeet is a green parrot, 29 cm long including a tail up to 13 cm. The adult has a bluish-grey head and back, separated by a green collar. There is a broad black chin stripe and the tail is blue tipped yellow. The upper mandible of the male's bill is red and the lower mandible is brown.

The female is similar, but has an all black beak and less green on the face than the male. Immature birds are mainly green, with an orange bill.[1]

Behaviour

Layard's Parakeet is a bird of forests, particularly at the edges and in clearings, and also gardens. It is locally common. It undergoes local movements, driven mainly by the availability of the fruit, seeds, buds and blossoms that make up its diet. It is less gregarious than some of its relatives, and is usually in small groups outside the breeding season, when it often feeds with Brahminy Starlings. Its flight is swift and direct, and the call is a raucous chattering. It nests in holes in large trees, laying 3–4 white eggs.

In culture

In Sri Lanka, this bird is knowns as alu girawa (ash-parrot) in Sinhala Language.[2] This bird appears on a 50c Sri Lankan postal stamp.[3]

References

Cited texts

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