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An inexpensive method for remotely monitoring nest activity 总被引:4,自引:0,他引:4
ABSTRACT. In studies of avian nest success, investigators often face the difficult task of periodically checking nest status while at the same time limiting observer influence on nest survival. Remotely monitoring nests using temperature data loggers is one method that allows for continuous data capture regarding nest status (i.e., active vs. inactive) without the negative effects associated with repeated nest checks. We used small temperature data loggers (Thermochron iButtons) to remotely monitor nests of Long-billed Curlews ( Numenius americanus ) in northeastern Nevada. Data loggers programmed to record temperature at 10-min and 20-min intervals were placed in curlew nests. Data loggers were set to collect data throughout the nesting cycle to determine onset of incubation and timing of nest failure. On average, Long-billed Curlews began incubating approximately 3 d after the first egg was laid and onset of incubation coincided with the laying of the third egg. iButtons allowed us to determine when incubation was terminated in 17 of 23 unsuccessful Long-billed Curlew nests, including 13 of 17 depredated nests. The presence of iButtons in Long-billed Curlew nests did not affect daily survival rate, egg hatchability or rate of nest abandonment. iButtons are an efficient and practical means for remotely monitoring nests of large egg-laying birds, such as the Long-billed Curlew. 相似文献
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江苏连云港发现长嘴海雀 总被引:1,自引:0,他引:1
正长嘴海雀(Brachyramphus perdix)属于鸻形目海雀科(Alcidae)(郑光美2011,2012),原被认为是斑海雀(B.marmoratus)的两个亚种之一(郑作新1987)。这两个亚种后被提升为两个独立的种,其中,北美种——斑海雀(B.marmoratus,英文名Marbled Murrelet)繁殖于美国加利福尼亚到阿留申群岛,亚洲种——长嘴海雀(B.perdix,英文名Long-billed Murrelet)繁殖于日本鄂霍次克海到俄罗斯的堪察加半岛(Friesen et al.1996),这种新 相似文献
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正2014年4月7至25日,在湖北省武汉市江夏区汤逊湖千亩塘(30°26'48″N,114°24'27″E)观测到长嘴半蹼鹬(Limnodromus scolopaceus)1只,隶属于鸻形目鹬科半蹼鹬属。该鹬被发现于一大型荷塘内,同域分布有扇尾沙锥(Gallinago gallinago)、林鹬(Tringa glareola)、鹤鹬(T.erythropus)、泽鹬(T.stagnatilis)等鹬科鸟种。借助蔡司60倍单筒望远镜观察,并拍摄下图片及视频后发现,该鹬中等体型,与扇尾沙锥近似,但比鹤鹬小。具长而粗的嘴,全嘴色深。白色眉纹明显。上体体羽深褐色,具浅色羽缘。尾上覆羽具横斑。下体色浅,胸 相似文献
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长嘴百灵生长能学的研究 总被引:2,自引:1,他引:1
通过测定雏鸟气体代谢和身体组织能量积累的方法,研究了长嘴百灵(Melanocorypha maxima)在自然条件下生长期间的能量投资。最小能量投资出现在0-1日龄,为15.94千焦耳/天;最大能量投资出现在10-11日龄,为90.44千焦耳/天。雏期的总能量投资是726.79千焦耳。其中生产能是365.40千焦耳,用于维持的能是361.39千焦耳。 相似文献
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