Lek

Japanese: Lek

…The topography that forms the backbone of the country is the old and new sedimentary topography of the Rhine and Meuse rivers that run through the Netherlands from east to west and north, and the broad central part is the Rhine delta, which is made up of fluvial clay. As the Rhine flows into the Netherlands, it splits into the Waal and the Nederrijn, the latter of which branches off into the IJssel to the east of Arnhem, and further downstream it is called the Lek. The IJssel flows north and empties into Lake IJssel. …

From [Ruff]

…They forage for animal matter while walking through shallow water. In their breeding grounds, males gather at fixed locations called leks, and fight with each other, spreading their ornamental feathers. Females who visit the leks mate with the males they like, and build nests in separate locations to raise their chicks. Males are not involved in nesting, incubation, or brood rearing. They build dish-shaped nests in depressions on the ground, and lay four eggs per clutch. …

From [Mating Type]

…In many species, mating is limited to one male and one female. Some birds are promiscuous, with interesting social behaviors called leks. These are seen in birds such as the ruff and the prairie chicken, where each year during the breeding season, males gather in communal arenas to perform ritualistic displays. …

*Some of the terminology that mentions "Lek" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…国土の骨格を形づくる地形は，オランダを東から西，北へ貫流するライン川，マース(ムーズ)川の新旧の堆積地形であり，その広い中央部はライン川の三角州で河成粘土からなる。ライン川はオランダに流入するとワールWaal川とネーデルライン川に分かれ，後者はアルンヘムの東方でエイセルIJssel川を分流し，さらに下流はレックLek川と呼ばれる。エイセル川は北流してアイセル(エイセル)湖に注ぐ。…

【エリマキシギ】より

…浅い水の中を歩きながら動物質の餌をあさる。繁殖地では，雄はレックlekと呼ばれる一定の場所に集まり，互いに飾羽を広げて向かい合って争い，レックを訪れた雌は気に入った雄と交尾をして，離れた場所で巣をつくり雛を育てるが，雄は営巣，抱卵，育雛（いくすう）に関与しない。地上にへこみをつくり，皿形の巣をつくり，1腹4卵を産む。…