Effects of bird feeder density on the foraging behaviors of a backyard songbird (the House Finch, Haemorhous mexicanus ) subject to seasonal disease outbreaks
Effects of bird feeder density on the foraging behaviors of a backyard songbird (the House Finch, Haemorhous mexicanus ) subject to seasonal disease outbreaks
复制标题
喂鸟器密度对受季节性疾病爆发影响的后院鸣禽（家雀、Haemorhous mexicanus）觅食行为的影响
DOI：
10.1139/cjz-2019-0282
复制
发表时间：
2020
影响因子：
1.4
通讯作者：
Hawley, D.M.
中科院分区：
文献类型：
--
作者：
Aberle, M.A.;Langwig, K.E.;Adelman, J.S.;Hawley, D.M.
提供野生动物，如后院喂鸟，可以改变动物的行为和生态在不同的方式。对于高度依赖补充资源的物种来说，关键是要了解供应程度的变化，就像在后院自然发生的那样，以可能与疾病传播相关的方式改变野生动物的行为和生态。我们在郊区实验性地操纵饲养者密度，并跟踪当地的丰度，觅食行为，体重和运动的家雀（墨西哥血喉（P.L.）Statius Müller，1776）），病原体的主要宿主，通常在饲养者中传播。高馈线密度的网站窝藏较高的本地家雀丰度，在这些网站的鸟类有较长的喂养回合和馈线相对于低馈线密度的网站的总时间。家雀在高密度饲养网站有较低的残留体重，尽管更明显的饲养访问。最后，在低密度饲养场所首次记录的鸟类更有可能移动到邻近的高密度饲养场所，反之亦然。由于当地的丰富度和时间花费在饲养员都与疾病的风险，在这个物种，这些特征的异质性的影响，在鸟类饲养密度可能会有重要的后果，在这个系统中的疾病动态，更广泛的。
Provisioning of wildlife, such as backyard bird feeding, can alter animal behavior and ecology in diverse ways. For species that are highly dependent on supplemental resources, it is critical to understand how variation in the degree of provisioning, as occurs naturally across backyards, alters wildlife behavior and ecology in ways potentially relevant to disease spread. We experimentally manipulated feeder density at suburban sites and tracked local abundance, foraging behaviors, body mass, and movement in House Finches (Haemorhous mexicanus(P.L. Statius Müller, 1776)), the primary host of a pathogen commonly spread at feeders. Sites with high feeder density harbored higher local House Finch abundance, and birds at these sites had longer feeding bouts and total time on feeders relative to sites with low feeder density. House Finches at high-density feeder sites had lower residual body mass despite greater apparent feeder access. Finally, birds first recorded at low-density feeder sites were more likely to move to neighboring high-density feeder sites than vice versa. Because local abundance and time spent on feeders have both been linked with disease risk in this species, the effects of heterogeneity in bird feeder density on these traits may have important consequences for disease dynamics in this system and more broadly.