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首页> 外文期刊>Slovak Raptor Journal >Foraging opportunism and feeding frequency in the red-footed falcon (Falco vespertinus) in Slovakia: case study from 2017
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Foraging opportunism and feeding frequency in the red-footed falcon (Falco vespertinus) in Slovakia: case study from 2017

机译：斯洛伐克红脚f（Falco vespertinus）的觅食机会主义和进食频率：2017年的案例研究

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摘要

Foraging opportunism and feeding frequency are less studied parameters of behaviour in insectivorous falcons, many of which are endangered bird species. In this short study, prey composition and feeding frequency of red-footed falcon?(Falco vespertinus) nestlings were studied using the method of camera recordings during seven days in July 2017 in southwestern Slovakia. Camera recording analyses of 2–3 chicks (14–26 days old) in three nests revealed a significant preference for insects (97%, n = 305 prey items), of which the Italian locust (Calliptamus italicus) was highly predominant (54%). We also found very high average chick feeding frequency (9.9 feedings per hour, n = 29 hours 22 min of regular observations), whereby the females fed their young ones more frequently (64.9%, n = 305 feedings) than the males (35.1%). Analyses of food composition in adverse weather conditions showed that unfavourable weather had a negative effect on chick feeding frequency, and in rainy weather the males fed significantly less than the females.
机译：在食虫性猎鹰中，觅食机会主义和觅食频率是行为研究较少的参数，其中许多是濒临灭绝的鸟类。在这项简短的研究中，2017年7月在斯洛伐克西南部用7天的摄像头记录法研究了红脚f（Falco vespertinus）雏鸟的猎物组成和摄食频率。相机记录分析了三个巢中的2-3只小鸡（14-26天大），发现它们对昆虫的偏爱显着（97％，n = 305个猎物），其中以意大利蝗虫（Calliptamus italicus）为主要优势（54％ ）。我们还发现鸡的平均摄食频率非常高（每小时摄食9.9次，n = 29小时22分钟，定期观察），因此，雌性比雄性（35.1％）更频繁地喂养幼年（64.9％，n = 305次） ）。对不利天气条件下食物成分的分析表明，不利的天气对雏鸡的饲喂频率有负面影响，而在阴雨天气，雄性的饲喂量明显少于雌性。

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