エリマキシギ, Ruff/Reeve. Philomachus pugnax.

渡り鳥

エリマキシギ,  Ruff/Reeve. Philomachus pugnax.

エリマキシギ 学名 Philomachus pugnax.

Wiki-erimakisigi.jpg

分布

ユーラシア大陸の北部から北極圏にかけて繁殖をおこなう。ロシア中部で繁殖する個体もある。冬期は、地中海沿岸からアフリカ、中東、インド、オーストラリア南部に渡りをおこない越冬する。ロシア中部で繁殖した個体は100万羽以上アフリカに渡来すると言われ、サハラ砂漠以南に渡り越冬する。

日本は渡りの通過点にあたり旅鳥として春と秋に少数が水田や入り江などに渡来し観察される。西日本では、時々越冬する個体もいる。日本で観察されるのはほとんど冬羽だが、春には襟巻きが生えかけたオスが見られることもあるが夏羽を観察できる事は少ない。

形態

全長雄32cm、雌25cm。

雄の方が大きく、地上では比較的直立した姿勢をとる。雄の夏羽では目の上から耳状の飾り羽、くびから襟巻状の飾り羽が生えるが、その色は白く、青黒色に黒の横縞、灰黒色、白地に黒の横縞、褐色、黄褐色に黒の横縞、あめ色などの組み合わせがあり多様。背や肩羽も同様で、黒色の軸斑や褐色、灰色の羽縁や横斑があったりと多様である。胸側には黒や褐色の粗大斑があり、飛翔時には翼の上面には細い白線がみえる。嘴は褐色、橙黄色、黒褐色で、足は黄色、赤色、橙色、褐色と様々な変化がみられる。

雌の夏羽では頭部の飾り羽がなく、頭や体の上面は淡褐色に黒色の大きな斑がある。

冬羽では雌雄同じで、頭は淡褐色で黒い縦斑がある。体の上面の軸斑は白色。

エリマキシギ 動画1

Ruff/Reeve (Philomachus pugnax)

Distribution

Ruff( Philomachus pugna) spreads from the northern part of the Eurasian Continent to the Arctic Circle. There is the individual spreading in the central part of Russia. For the winter season, I perform coming from abroad in Africa, the Middle East, India, the southern part of Australia from the Mediterranean Sea coast and winter. It is told Africa to come more than 1 million of them, and it is sub-Saharan and crosses it, and the individual which spread in the central part of Russia winters.

Japan is the passage point of the ferry, and a few comes in spring in a rice field or the inlet in autumn, and Ruff is observed as a bird in transit. In West Japan, there is the individual which sometimes winters. It is almost eclipse plumage that is observed in Japan, but the male which a scarf was about to grow may be seen in spring, but can rarely observe a feather in the summer.

Two male Ruff in breeding plumage each with prominent neck feathers, white underparts, and flanks blotched with black. One has a white neck collar of feathers and the other has a colour that is almost entirely very dark brown.

Males in breeding plumage in the Netherlands

Description

Full length male 32cm, female 25cm.

Ruff has a bigger male and takes the attitude that I relatively stood straight on the ground. The male diverseness that a scarf-formed decoration feather grows from an auricular decoration feather, a neck from eyes with the feather in the summer, but the color is white, and there is a combination of black lateral stripe, reddish yellow in a black lateral stripe, brown, yellowish-brown on a black lateral stripe, ash black, cloth of white background in bluish black. A back and the scapular are similar, and black axis spot and brown, sad feather relationship and side are various when they have a capricious it. There are black and a brown rough big spot in the chest side, and a thin white line is seen in the top surface of the wing at the time of the flight. As for the bill, yellow, red, orange, brown and various changes are seen in the foot with brown, orange, blackish brown.

There is not a decoration feather of the head with the feather in female summer;, in the top surface of a head and the body, is black in ecru; big; have a capricious.

The sex is the same in the eclipse plumage, and the length that the head is maple, and is black is capricious. The axis spot of the top surface of the body is white.

Ruff 動画2





       ↓ ご覧のサイトが簡単無料で作成できます ↓







Dreamers!でお小遣い稼ごう 今すぐ無料登録
1
5つ星ホテルが2つ星の価格で!?高級旅行が世界最安値保証で楽しめる会員制旅行クラブ

関連記事

ピックアップ!

ピックアップ!

月別アーカイブ

誰でも簡単に無料で作れる 稼げるブログ Dreamers!