The Golden-winged Warbler (Vermivora chyrsoptera) and Blue-winged Warbler (Vermivora cyanoptera) are both Neotropical migratory species of elevated conservation concern that overlap in distribution on their Central American wintering grounds, yet the extent to which they overlap in terms of habitat use is unknown, potentially hindering conservation efforts. We surveyed these two species along habitat and elevational gradients within a coffee-growing landscape during 2016 and 2017 in Yoro, Honduras. We used playback with a mobbing track known to enhance detections of female warblers, since examining sexual habitat segregation was another objective of our study. Habitat occupied by these two species differed, with male Golden-winged Warblers occurring in landscapes dominated by humid forest/coffee (forest with some dense shade coffee, which were indistinguishable with remote sensing at our sites) at higher elevations than male Blue-winged Warblers, which were positively associated with the amount of agriculture in the landscape. Six of seven female Golden-winged Warblers were encountered in shade coffee, however, this association was not significant, likely due to small sample size and low detectability. The association between male Golden-winged Warblers and humid forest/coffee and elevation, and contrasts in habitat use between male and female Golden-winged Warblers, are consistent with prior research in the region. Furthermore, the landscape associations of these non-breeding Vermivora species mirror their breeding landscape associations, with Golden-winged Warblers occupying more forested landscapes and Blue-winged Warblers occupying more agricultural landscapes. The use of shade coffee by female Golden-winged Warblers and Blue-winged Warblers suggests agroforestry could be a promising tool for conserving wintering populations of these species, although this result should be viewed with caution given that use of shade coffee is reported to elevate predation risk in other migratory species, and may not provide habitat for forest-dependent resident birds.

The post Habitat associations of Golden-winged Warblers and Blue-winged Warblers during the non-breeding season first appeared on Avian Conservation and Ecology.

金翅莺 ( Vermivora chyrsoptera ) 和蓝翅莺 ( Vermivorayanoptera )）都是受到高度保护关注的新热带迁徙物种，它们在中美洲越冬地的分布重叠，但它们在栖息地利用方面重叠的程度尚不清楚，可能会阻碍保护工作。2016 年和 2017 年，我们在洪都拉斯约罗的咖啡种植景观中沿着栖息地和海拔梯度对这两个物种进行了调查。我们使用已知可以增强对雌性莺的检测的围攻轨迹进行回放，因为检查性栖息地隔离是我们研究的另一个目标。这两个物种占据的栖息地不同，雄性金翅莺出现在以潮湿森林/咖啡为主的景观中（有一些茂密树荫咖啡的森林，（在我们的地点通过遥感无法区分），海拔高于雄性蓝翅莺，这与景观中的农业量呈正相关。七只雌性金翅莺中有六只在遮荫咖啡中遇到，然而，这种关联并不显着，可能是由于样本量小和可检测性低。雄性金翅莺与潮湿森林/咖啡和海拔之间的关联，以及雄性和雌性金翅莺之间栖息地利用的对比，与该地区先前的研究一致。此外，这些非繁殖蠕虫物种的景观关联反映了它们的繁殖景观关联，金翅莺占据了更多的森林景观，蓝翅莺占据了更多的农业景观。

非繁殖季节金翅莺和蓝翅莺的后栖息地协会首次出现在《鸟类保护与生态学》上。