2017년 1월 21일 토요일

Hood thrasher

Hood thrasher

Hood thrasher
Hood thrasher
Hood thrasher Mimus macdonaldi
Maintenance situation evaluation [1]
VULNERABLE
(IUCN Red List Ver.3.1 (2001))
Status iucn3.1 VU.svg

Classification
: Animal kingdom Animalia
The gate : Chordate gate Chordata
Amon : Vertebrate Amon Vertebrata
Rope : Bird rope Aves
Eyes : Sparrow eyes Passeriformes
Course : Thrasher department Mimidae
The genus : Thrasher genus Mimus
Kind : Hood thrasher M. macdonaldi
Scientific name
Mimus macdonaldi
(Ridgway, 1890)
Synonym

Nesomimus macdonaldi

Japanese name
Hood thrasher
Fame
Hood Mockingbird

It is one kind of birds of the thrasher department, and the Hood thrasher (British: Hood Mockingbird, a scientific name: Mimus macdonaldi) is called Española Mockingbird. It is the endemic species of the エスパニョラ island (British: Hood island) among the Ecuadorian Galapagos Islands and it is inherent to the Galapagos group of islands and is one kind of the thrashers of four kinds in conjunction with the closeness.

I inhabit the dry forest and am a sloppy meal, but or eating meat is mainly corrosive. With high social structure to have the territory, I am not afraid of a person again. As for the Hood thrasher, Charles Darwin is the only kind of observation and the Galapagos mockingbirds which I did not collect in a voyage of HMS Beagle [2].

Table of contents

Form

 
It is big with full length, the bill.

At 28cm in total length, it becomes the biggest kind in the Galapagos thrashers of the archipelago [3]. In the top surface, the inferior belly of the white has a sad irregularity and a brown feather as well as [3], other Galapagos thrashers in grayish brown. A long tail and foot give the characteristic appearance. The bill that the head is thin is helpful to pick at the egg of the seabird. The Hood thrasher has the biggest bill in Galapagos thrashers [4].

This kind has the connection with the black mustache thrasher (Mimus longicaudatus) of the geographically near Ecuador mainland pointed out with other Galapagos thrashers [5], but the most closely related kind is Bahamas thrasher (Mimus gundlachii); [6].

Distribution

The habitat is the subtropical zone or a tropical dry forest and a dry scrubland. I am distributed only over Gardner Kojima who is not 1km away from エスパニョラ island and there either [3] and it extends over the whole dry shrub of the island and inhabits [7].

Because the Hood thrasher is mainly the domain where the distribution was limited to, it is thought with vulnerable species in the nature by the birdlife International. Weak ecosystem and the high risk of the bad weather expose a kind to danger of the population decrease in particular. It is not investigated the number of the habitation [7].

Habits

 
The Hood mockingbird which is going to drink water from the bottle of the tourist.

It is extremely active, and curiosity is strong and is not afraid of a person at all. I follow the tourist looking for food and a drink or something strange [5]. I get water from a tourist by picking at a water bottle and need it in some cases [8]. I do not fly very much and rather often walk [3].

Strong social structure is formed of a group of families. When I protect the territory from other groups when I perform hunting having strong territoriality in the territory, I cooperate in a group. The individual so as to be lower of the group helps that I take care of the young bird [4]. I gather together as a group to 40 in the non-breeding season [3].

Eating habit

It is a sloppy meal, but is predation-related to corrosive mainly [4]. I eat the egg of the seabird (Galapagos albatross, アオアシカツオドリ, アオツラカツオドリ, robalo gull, [3] including the American oysterbird) nesting in the island [9], and the egg of ガラパゴスバト does 採餌, too [3]. In addition, I eat a thing hunted by other predatory animals such as the corpse of the creature, e.g., the Galapagos buzzard [7].

References

  1. ^ BirdLife International (2008). "Mimus macdonaldi". IUCN Red List of Threatened Species. Version 2011.2. International Union for Conservation of Nature. 18 November 2011 reading.  )
  2. ^ Grant, K. Thalia and Estes, Gregory B. 2009. "Darwin in Galapagos: Footsteps to a New World" Princeton University Press, Princeton.[1]
  3. ^ a b c d e f g Isabel Castro and Antonia Phillips, A Guide to The Birds of the Galápagos Islands, Prinston University Press, 1996, p. 121.
  4. ^ a b c Horwell, David; Pete Oxford (August 2005). Galápagos Wildlife (2 ed.). Bradt Travel Guides. pp. 45, 48. ISBN 1-84162-100-5. 
  5. ^ a b Rothman, Robert. "Mockingbirds". Rochester Institute of Technology. November 18, 2011 reading.
  6. ^ Arbogast, B., Drovetski, S., Curry, R., Boag, P., Seutin, G., Grant, P., Grant, B. and Anderson, D. (2006) "The Origin and Diversification of Galapagos Mockingbirds." Evolution 60(2): 370-382.
  7. ^ a b c "Espanola Mockingbird (Mimus macdonaldi)". BirdLife International (2011). November 18, 2011 reading.
  8. ^ Allen, Christina (March 4, 1999). "The Hood Mockingbird". CNN. January 2, 2008 reading.
  9. ^ Harris, M. P. (1968). "Egg-eating by Galápagos mockingbirds". Condor 70:269–70 [2] (PDF)

Allied item

This article is taken from the Japanese Wikipedia Hood thrasher

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