Nest survival in the Neotropical Black Catbird (Melanoptila glabrirostris)

作者：Roldan Clara Blanca^*; LaPergola Joshua B; Chapa Vargas Leonardo; Calme Sophie

来源：Journal of Ornithology, 2013, 154(2): 491-499.

DOI：10.1007/s10336-012-0917-0

• Yucatan Peninsula
• Nest survival
• Nest predation
• Black Catbird
• Melanoptila glabrirostris

We estimated nest survival and evaluated factors affecting this demographic parameter for the Black Catbird (Melanoptila glabrirostris), a poorly known mimid endemic to the Yucatan Peninsula. During the 2008 and 2009 breeding seasons, we monitored 136 nests spread across four sites in Mexico, including three mainland coastal sites in the Sian Ka%26apos;an Biosphere Reserve and one site on Cozumel Island. We documented higher nest loss in the mainland sites (74 % failed) in contrast to the island site (21 % failed). Based on our observations, we suspect that predation was the main cause of nest failure. Using logistic exposure models and Akaike%26apos;s Information Criterion, we found date, nest age, and nest type to be the main factors influencing nest survival. Nest survival was lower for open cup-nests in comparison with semi-cavity nests. Interval nest survival (proportion of nests expected to survive the entire nesting season) was 0.102 (CI = 0-0.660) for open-cup nests and 0.618 (CI = 0-0.981) for semi-cavity nests. Additional research on adult and juvenile survival and dispersal patterns, especially for the mainland population, is needed to determine if these rates of nest survival are sufficient to maintain stable populations.

• 出版日期2013-4