Williamson’s Sapsuckers, like most woodpeckers, require live and dead standing trees for foraging and nesting. Forest management plans that include Williamson’s Sapsucker habitat conservation guidelines currently focus on nesting trees because little is known about foraging habitat requirements, but foraging habitat in close proximity is also essential for the survival and reproduction of the species. We conducted a study on the selection of stand-level characteristics for foraging and nesting territories to improve knowledge on the habitat requirements of this endangered woodpecker in Canada during the breeding season. We tracked 27 radio-tagged Williamson’s Sapsuckers in managed forest at their northern range limit in two regions of southern British Columbia. We examined the selection of forest composition and configuration characteristics at the foraging patch and stand levels by comparing use and availability, and described foraging trip distances. In the Okanagan region, sapsuckers did not show a selection pattern for foraging patch characteristics. In the Western region, Williamson’s Sapsuckers selected foraging patches with higher densities of large live Douglas-fir trees. Nest patches were usually in small openings and had lower tree densities than foraging patches in the Western region, but not in the Okanagan region. Open areas (e.g., clear-cuts, seed tree cuts, pastures, roads, powerlines) were avoided during foraging trips in both regions. Regarding stand-level configuration, Williamson’s Sapsuckers selected continuous stands for foraging – with ≥30% crown closure in both regions. We used the 50th and 95th percentiles of foraging trip distances to recommend zones for nest reserve (no-harvest; 0–140 m from the nest) and nest management (Okanagan: 340 m, Western: 410 m). For the nest management zone, we recommend only partial harvesting with retained groups of trees extending from 140 to 340 m in the Okanagan region and from 140 to 410 m in the Western region. We suggest that Williamson’s Sapsuckers exhibited stronger selection when foraging in the Western region, because they compensated for longer foraging distances due to higher proportions of open area in their nesting territories.

像大多数啄木鸟一样，威廉姆森的啄木鸟也需要活着和死去的树木进行觅食和筑巢。包括威廉姆森（Williamson）的《啄木鸟》栖息地保护指南在内的森林管理计划目前主要集中在筑巢树木上，因为人们对觅食栖息地的要求知之甚少，但在附近觅食栖息地对于该物种的生存和繁殖也是必不可少的。我们进行了觅食和筑巢地立地特性选择的研究，以提高人们对繁殖季节加拿大这种濒临灭绝的啄木鸟栖息地要求的认识。在不列颠哥伦比亚省南部的两个地区，我们在受管理的森林中以北距为限，追踪了27个带有无线电标记的威廉姆森啄木鸟。通过比较使用和可用性，我们在觅食斑块和林分层次上检查了森林组成和配置特征的选择，并描述了觅食的行进距离。在欧肯娜根地区，啄木鸟没有表现出觅食斑块特征的选择模式。在西部地区，威廉姆森的啄木鸟选择了高密度的大花旗松杉木树的觅食地。巢区通常在较小的开口处，树木密度比西部地区的觅食区要低，但在Okanagan地区则不然。开放区域（Williamson的Sapsuckers选择了密度较高的大型活的道格拉斯杉树的觅食斑块。巢区通常在较小的开口处，树木密度比西部地区的觅食区要低，但在Okanagan地区则不然。开放区域（Williamson的Sapsuckers选择了密度较高的大型活的道格拉斯杉树的觅食斑块。巢区通常在较小的开口处，树木密度比西部地区的觅食区要低，但在Okanagan地区则不然。开放区域（例如，在这两个地区的觅食旅行中都避免了砍伐，砍伐种子，砍伐树木，牧场，道路，输电线）。关于机架的配置，Williamson的Sapsuckers选择连续机架进行觅食-两个区域的冠冠闭合率均≥30％。我们使用觅食行进距离的第50和95个百分位来建议巢区储备（无收获；距巢0-140 m）和巢管理（Okanagan：340 m，西方：410 m）的区域。对于巢管理区，我们建议仅进行部分采伐，保留部分树木，其中Okanagan地区的树木从140到340 m延伸，而西部地区的树木从140到410 m延伸。我们建议，在西部地区觅食时，威廉姆森的“啄木鸟”表现出较强的选择力