À partir de 447 localisations par radio-télémétrie de 12 engoulevents bois-pourri femelles et 32 mâles adultes pendant trois saisons de reproduction (2018-2020), nous avons utilisé des fonctions de sélection des ressources pour évaluer la préférence des engoulevents en termes d'habitat dans la partie nord de leur zone de reproduction au sein de la réserve naturelle de Torrance Barrens Dark-Sky, au centre de l'Ontario. Au Canada, les populations d'engoulevents bois-pourri ont décliné de plus de 30 % au cours des 20 dernières années et une compréhension complète de la sélection de leur habitat diurne et nocturne est nécessaire pour développer des stratégies efficaces de gestion de la conservation. L'engoulevent bois-pourri ( Antrostomus vociferus) est un insectivore aérien nocturne migrateur qui se reproduit dans tout l'est de l'Amérique du Nord. La manière dont les animaux choisissent leurs habitats pendant les périodes d'inactivité, par exemple pour la nidification ou le repos, est un aspect souvent négligé de la préférence d'habitat qui peut varier considérablement selon la manière dont les habitats sont choisis pendant les périodes actives. Conservation efforts for northern breeding Whip-poor-wills should focus on surveying and protecting similar rock barrens landscapes and those with a comparable patchwork of land cover features. While landscapes dominated by rock barrens interspersed with patches of shrubland and deciduous and mixed forests are uncommon, they could play an important role in the persistence of declining Whip-poor-will populations, particularly in the northern part of their breeding range. Our results suggest that shrubland and deciduous forest are important as both foraging and roosting habitat for Whip-poor-wills in this population, while rock barrens and mixed forest are important for foraging. At night, Whip-poor-wills preferred to use mixed forest and rock barrens, while there was no difference between use and availability of these land cover types during the day. During both day and night, Whip-poor-wills used deciduous forest and shrubland more often than expected based on availability, while they avoided open water and wetlands. Locations were taken both at night when individuals were primarily active and during the day when they were roosting. From 447 radio-telemetry locations of 12 female and 32 male adult Whip-poor-wills radio-tracked over three breeding seasons (2018-2020), we used resource selection functions to assess habitat preference of Whip-poor-wills in the northern portion of their breeding range within Torrance Barrens Dark-Sky Preserve, central Ontario. In Canada, Whip-poor-will populations have declined by over 30% in the past 20 years, and a comprehensive understanding of their diurnal and nocturnal habitat selection is required for developing effective conservation management strategies. Eastern Whip-poor-wills ( Antrostomus vociferus) are migratory nocturnal aerial insectivores that breed throughout eastern North America. How animals choose habitats during periods of inactivity, such as roosting or resting, is an often overlooked aspect of habitat preference that can differ significantly from how habitats are selected during active periods.
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