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首页> 外文期刊>Notornis >Skua ( Catharacta sp.) foraging behaviour at the Cape Crozier Adelie Penguin ( Pygoscelis adeliae ) colony, Ross Island, Antarctica, and implications for breeding | Notornis and Birds New Zealand
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Skua ( Catharacta sp.) foraging behaviour at the Cape Crozier Adelie Penguin ( Pygoscelis adeliae ) colony, Ross Island, Antarctica, and implications for breeding | Notornis and Birds New Zealand

机译：南极州罗斯岛的克罗齐尔角阿德利企鹅（Pygoscelis adeliae）殖民地的Skua（Catharacta sp。）觅食行为及其育种意义|诺托尼斯和鸟类新西兰

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We observed that South Polar Skuas (Catharacta maccormicki) breeding near the Adelie Penguin (Pygoscelis adeliae) western colony at Cape Crozier, Ross Island, Antarctica were able to forage throughout the colony, the majority of which was not defended by territorial skuas as in other Ross Island colonies. All local skuas were able to find enough food on the colony throughout January to support breeding and none were seen to forage at sea. Skuas foraged as individuals to obtain penguin eggs and chicks but kleptoparasitism usually occurred so that several skuas fed in turn on a single carcass. At the end of each feeding event a general melee occurred in which up to 30 skuas fought over the chick remains. The implications for skua breeding of this foraging regime, in which any skuas in the local area can obtain penguin food, are considered. We suggest that the high levels of food availability contributed to the unusually high success for this region of these skuas in raising both chicks. Desertion of chicks while foraging, however, leads to some mortality among older chicks later in the season through predation. It is recommended that further research on skuas at super-large penguin colonies be undertaken.
机译：我们观察到，南极贼鸥（Catharacta maccormicki）在南极罗斯岛的克罗齐尔角的阿德利企鹅（Pygoscelis adeliae）西部殖民地附近繁殖，能够在整个殖民地觅食，其中大多数没有像其他地方那样受到领土鼠的保护罗斯岛殖民地。在整个一月份，所有当地的斯kuas人都能在该殖民地找到足够的食物来支持繁殖，而且没有人在海上觅食。贼鸥作为个体觅食以获得企鹅卵和小鸡，但通常会发生贪食性寄生虫病，因此数只狮ku被依次喂食在一个car体上。在每次喂食事件结束时，都会发生一次一般的混战，其中有多达30只ku牛在小鸡遗骸上进行战斗。考虑了这种觅食方式的贼鸥繁殖的意义，在这种觅食方式中，当地的任何斯卡亚人都可以获得企鹅食物。我们建议，高水平的食物供应量使这些狮ku的这一地区在饲养两只小鸡方面取得了异常高的成功。然而，觅食时雏鸡的遗弃会导致本赛季后期由于捕食而导致年龄较大的雏鸡死亡。建议对超大型企鹅群落的斯夸斯作进一步研究。

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