Records of breeding in Wilson’s Plover Charadrius wilsonia with new localities for Brazil

Abstract Wilson’s Plover, Charadrius wilsonia, is widely distributed in coastal areas of the Americas. This report presents the first record of breeding in this species on Coroa do Avião Island, on the coast of Pernambuco, and in the estuary of the Cardoso and Camurupim rivers, on the coast of Piauí, in northeastern Brazil, extending the known area of reproduction of this species in this region. One breeding pair was observed on October 29th 2014 on Coroa do Avião Island, and a second pair was recorded on April 6th 2016 in the Cardoso/Camurupim estuary on the Piauí coast. Both the male and the female contributed to the incubation of the eggs. The nest on Coroa do Avião island was camouflaged by the local vegetation, but despite this, the eggs were attacked by a predator. Possible predators observed on the island included Caracara plancus and domestic cats and dogs.

摘要：威尔逊鸻（Wilson’s Plover，学名Charadrius wilsonia）广泛分布于美洲沿海区域。本报告首次记录了该物种在巴西东北部伯南布哥州海岸阿维昂岛（Coroa do Avião Island），以及皮奥伊州卡多索河与卡穆鲁平姆河河口沿岸的繁殖情况，拓展了该物种在该区域已知的繁殖分布范围。2014年10月29日，研究人员于阿维昂岛观测到一对繁殖个体；2016年4月6日，于皮奥伊州沿岸的卡多索-卡穆鲁平姆河口记录到第二对繁殖个体。雌雄双亲均参与卵的孵化。阿维昂岛上的鸟巢依托当地植被进行伪装，但即便如此，鸟卵仍遭到捕食者袭击。岛上观测到的潜在捕食者包括凤头卡拉鹰（Caracara plancus）以及家猫与家犬。