CorbaniHacheyDesrochers2014

Reference

Corbani, A.C., Hachey, M.-H., Desrochers, A. (2014) Food provisioning and parental status in songbirds: Can occupancy models be used to estimate nesting performance? PLoS ONE, 9(7). (Scopus )

Abstract

Indirect methods to estimate parental status, such as the observation of parental provisioning, have been problematic due to potential biases associated with imperfect detection. We developed a method to evaluate parental status based on a novel combination of parental provisioning observations and hierarchical modeling. In the summers of 2009 to 2011, we surveyed 393 sites, each on three to four consecutive days at Forêt Montmorency, Québec, Canada. We assessed parental status of 2331 adult songbirds based on parental food provisioning. To account for imperfect detection of parental status, we applied MacKenzie et al.'s (2002) two-state hierarchical model to obtain unbiased estimates of the proportion of sites with successfully nesting birds, and the proportion of adults with offspring. To obtain an independent evaluation of detection probability, we monitored 16 active nests in 2010 and conducted parental provisioning observations away from them. The probability of detecting food provisioning was 0.31 when using nest monitoring, a value within the 0.11 to 0.38 range that was estimated by two-state models. The proportion of adults or sites with broods approached 0.90 and varied depending on date during the sampling season and year, exemplifying the role of eastern boreal forests as highly productive nesting grounds for songbirds. This study offers a simple and effective sampling design for studying avian reproductive performance that could be implemented in national surveys such as breeding bird atlases. © 2014 Corbani, et al.

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@ARTICLE { CorbaniHacheyDesrochers2014,
    AUTHOR = { Corbani, A.C. and Hachey, M.-H. and Desrochers, A. },
    TITLE = { Food provisioning and parental status in songbirds: Can occupancy models be used to estimate nesting performance? },
    JOURNAL = { PLoS ONE },
    YEAR = { 2014 },
    VOLUME = { 9 },
    NUMBER = { 7 },
    NOTE = { cited By (since 1996)0 },
    ABSTRACT = { Indirect methods to estimate parental status, such as the observation of parental provisioning, have been problematic due to potential biases associated with imperfect detection. We developed a method to evaluate parental status based on a novel combination of parental provisioning observations and hierarchical modeling. In the summers of 2009 to 2011, we surveyed 393 sites, each on three to four consecutive days at Forêt Montmorency, Québec, Canada. We assessed parental status of 2331 adult songbirds based on parental food provisioning. To account for imperfect detection of parental status, we applied MacKenzie et al.'s (2002) two-state hierarchical model to obtain unbiased estimates of the proportion of sites with successfully nesting birds, and the proportion of adults with offspring. To obtain an independent evaluation of detection probability, we monitored 16 active nests in 2010 and conducted parental provisioning observations away from them. The probability of detecting food provisioning was 0.31 when using nest monitoring, a value within the 0.11 to 0.38 range that was estimated by two-state models. The proportion of adults or sites with broods approached 0.90 and varied depending on date during the sampling season and year, exemplifying the role of eastern boreal forests as highly productive nesting grounds for songbirds. This study offers a simple and effective sampling design for studying avian reproductive performance that could be implemented in national surveys such as breeding bird atlases. © 2014 Corbani, et al. },
    AFFILIATION = { Centre d'Étude de la Forêt, Université Laval, Québec, QC, Canada },
    ART_NUMBER = { e101765 },
    DOCUMENT_TYPE = { Article },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84904390060&partnerID=40&md5=c03bca7b3ce96406515bb747623a068f },
}

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