Selection of a breeding site is critical for many animals, especially for birds whose offspring are stationary during development. Thus, birds are often assumed to prefer concealed nest sites. However, 74% of studies (n = 106) that have evaluated this relationship for open-cup nesting songbirds in North America failed to support the nest-concealment hypothesis. We conducted a comparative analysis to identify factors that contribute to variation in the ability of researchers to find support for the nest-concealment hypothesis. We found that some of the discrepancy among studies can be explained by interspecific differences in morphological and extrinsic factors that affect nest predation. Moreover, methods that investigators used to estimate concealment affected whether studies found support for the nest-concealment hypothesis; 33% of the studies that used quantitative estimates found support for the nest-concealment hypothesis whereas only 10% of the studies that used qualitative estimates found support. The timing of measurements also explained some of the ambiguity; studies that provided little information regarding the timing of their foliage density estimates were less likely to support the nest-concealment hypothesis. Species with more conspicuous male plumage were less likely to support the nest-concealment hypothesis when we analyzed studies that used visual estimates. Whereas species with more conspicuous female plumage were more likely to support the nest-concealment hypothesis when we analyzed studies that used quantitative measures. Our results demonstrate that support for the nest-concealment hypothesis has been equivocal, but that some of the ambiguity can be explained by morphological traits and methods used to measure concealment.

Kathi L. Borgmann

Courtney J. Conway

The Wilson Journal of Ornithology

目标与范围一个多世纪以来，威尔逊鸟类学会出版了一本学术期刊，其形式和内容可供专业和业余鸟类学家轻松访问。威尔逊鸟类学杂志是一份季刊，由主要文章组成，这些文章基于对鸟类的原始研究和描述特别感兴趣的观察的简短交流。每期还包括对鸟类和相关主题的新书以及鸟类学新闻的评论。通过已故的乔治·米克施·萨顿 (GEORGE MIKSCH SUTTON) 的捐赠，《华尔街日报》的每一期都包括一个全彩卷首。当前每卷大约有 500 页。该杂志的主要重点是研究活鸟、它们的行为、生态学、适应性生理学和保护。虽然大多数文章都来自西半球的工作（大部分关于新热带鸟类的研究都在这里发表），但该杂志的地理覆盖范围是全球性的。该期刊是国际公认的重要的鸟类学主要期刊。爱德华兹奖每年颁发一次，以表彰上一年发表的最佳主要文章。威尔逊鸟类学杂志以前被命名为威尔逊公报。

The Wilson Journal of Ornithology is an academic journal published by the Wilson Ornithological Society, aimed at providing accessible research findings for both professional and amateur ornithologists. This quarterly journal primarily features major articles based on original research on birds and brief communications of particularly interesting observations. Each issue also includes reviews of new books related to birds and ornithological news. Each issue features a full-color frontispiece donated by the late George Miksch Sutton, with approximately 500 pages per volume. The journal's main focus is on the study of living birds, their behavior, ecology, adaptive physiology, and conservation. While most articles originate from research in the Western Hemisphere (with a significant amount of research on Neotropical birds published here), the journal has a global geographical coverage. The Wilson Journal of Ornithology is internationally recognized as a major journal in ornithology, and the Edwards Award is presented annually to honor the best major article published in the previous year. The journal was formerly known as the Wilson Bulletin.

威尔逊鸟类学杂志（Wilson Journal of Ornithology）是由威尔逊鸟类学会出版的一本学术期刊，旨在为专业和业余鸟类学家提供易于访问的研究成果。该杂志为季刊，主要包含基于对鸟类的原创研究和特别感兴趣的观察的主要文章，以及简短的交流。每期还包括对鸟类及相关主题的新书评论和鸟类学新闻。每一期都包含由已故的乔治·米克施·萨顿（George Miksch Sutton）捐赠的全彩卷首，当前每卷大约有500页。该杂志的主要研究重点是活鸟的行为、生态学、适应性生理学和保护。尽管大多数文章来自西半球的研究（尤其是关于新热带鸟类的研究），但该杂志的地理覆盖范围是全球性的。威尔逊鸟类学杂志被国际公认为重要的鸟类学期刊，每年颁发爱德华兹奖以表彰上一年发表的最佳主要文章。该杂志曾被称为威尔逊公报。

Wilson Journal of Ornithology

The Nest-Concealment Hypothesis: New Insights from a Comparative Analysis

A comparative analysis to identify factors that contribute to variation in the ability of researchers to find support for the nest-concealment hypothesis found that some of the discrepancy among studies can be explained by interspecific differences in morphological and extrinsic factors that affect nest predation.

Category	Quartile
生物学	4
生物学, 鸟类学	4

The Nest-Concealment Hypothesis: New Insights from a Comparative Analysis

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