| 翻訳と辞書 |
| Titicaca flightless grebe ： ウィキペディア英語版 |
Titicaca grebe
:"Centropelma"'' redirects here. This was also the initial, preoccupied name of the spider genus ''Nicodamus.
The Titicaca grebe (''Rollandia microptera''), also known as the Titicaca flightless grebe or short-winged grebe, is a grebe found on the altiplano of Peru and Bolivia. As its name implies, its main population occurs on Lake Titicaca. Lake Uru Uru and Poopó, the Rio Desaguadero, and small lakes that connect to Lake Titicaca in wet years, serve as "spillovers" territory. In the past, the population was larger and several of these lakes – such as Lakes Umayo and Arapa – apparently had and may still have permanent large colonies (BirdLife International 2006). It is sometimes placed in ''Podiceps'' or a monotypic genus ''Centropelma''. Its local name is ''zampullín del Titicaca''.
== Description ==
This is a mid-sized grebe, varying from 28–45 cm in overall length. It weighs up to 600 g. Its coloration is unmistakable. The only grebe species it somewhat resembles is the unrelated red-necked grebe which is not found in South America. The only congener, the white-tufted grebe, does not look very similar. The color pattern of the Titicaca grebe is altogether similar to that of the red-necked grebe, but it has a darker belly, and a white (not light grey) throat patch that runs down the neck nearly to the breast. Due to the short wings, the rufous flanks can usually be seen. The ornamental plumes on the head are a vestigial version of those of the white-tufted grebe, but dark. Iris and the lower bill are yellow. Juveniles and non-breeding adults are duller, lack the ornamental plumes, and in the case of the former have rufous stripes on the sides of the head and more white on the neck, so that the rufous breast does not show in swimming birds.
It is entirely flightless, but will use wing-assisted running over considerable distances. It is an excellent diver, reaching a burst speed of 3.5 km/h (2 knots).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Titicaca grebe」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|