Nicholas Anich

Nicholas Anich
Wisconsin Department of Natural Resources · Bureau of Natural Heritage Conservation/Office of Applied Science

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32
Publications
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419
Citations

Publications

Publications (32)
Article
Full-text available
Documenting space-use patterns of animals is important for understanding their ecology and providing for their conservation. The concept of territory refers to a defended area, whereas the concept of home range refers to any area used by an animal during its normal activities. Few studies have explored quantitatively how these areas differ, and the...
Article
Full-text available
Why individuals use some areas within a home range more than others is poorly understood. One factor that may drive differential use is habitat heterogeneity. We radiotracked 37 male Swainson's Warblers (Limnothlypis swainsonii) at two sites in eastern Arkansas, St. Francis National Forest and White River National Wildlife Refuge. We calculated 95%...
Article
Aim Species conservation typically involves working within the existing geographic range of that species. However, with habitat loss and climate change, conservationists may need to extend their work beyond the current range of a species. We attempted to extend the geographic breeding range of a rare species, Kirtland's warbler ( Setophaga kirtland...
Article
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Red crossbills ( Loxia curvirostra ) are the archetypal example of a taxon with high infraspecific diversity in traits including bill size and especially vocal characteristics. Currently, at least 11 different call types in North America have been recognized. We hypothesize that a variant call within type 10 has been overlooked and is a distinct ty...
Article
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Ecological inferences are often based on the locations at which species are present, but many species records have substantial uncertainty in spatial metadata, limiting their utility for fine-scale analyses. This is especially prevalent in historical records such as museum specimens, and in some citizen-science data. For example, the North American...
Article
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Despite the importance of monitoring introduced species, reports of non-native birds are often initially dismissed by observers. This leads to serious information gaps about source localities, founding numbers, and growth and expansion of potential new populations. Here, we report on European Goldfinches in North America between 2001 and 2021, focu...
Article
Microclimates play a prominent role in efforts to conserve species in the face of climate change. However, climate-change research often relies on macroclimate data to predict species’ responses to climate change and may not accurately represent the temperatures actually experienced by organisms. Our objective was to characterize microclimates near...
Preprint
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Please see published version: https://neobiota.pensoft.net/article/97736/ Monitoring introduced species is important because of possible effects on native species and ecosystems. Here, we report on European Goldfinch observations from North America between 2001–2021, focusing on a population in the western Great Lakes region. We compiled over 7000...
Article
We report the observation of a male Setophaga kirtlandii (Kirtland's Warbler) feeding nestlings in a Setophaga coronata (Yellow-rumped Warbler) nest in Vilas County, WI. To our knowledge, this is the first documented report of interspecific feeding in Kirtland's Warbler, adding to the list of species known to have exhibited this behavior.
Article
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Nymphalis antiopa (Mourning Cloak), a common daytime-flying butterfly, is known to exhibit territorial defense against small animals that share the same airspace. However, a bat seems to be an unlikely target for this aggression because bats are potential predators and diurnal bat activity is rarely observed. Here, we report territorial behavior of...
Article
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Red Crossbills staged a major flight into Wisconsin from late summer 2017 to early summer 2018 as part of a significant irrup- tion to eastern North America. At least six “call types” were documented with audio recordings, most stemming from the West and including first state records of Types 1, 4, and 5. Type 2 was most common, followed by Type 4...
Article
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.— Understanding natal dispersal and rates of philopatry can help provide minimum estimates of juvenile survival, a vital demographic parameter for which little information is available. However, despite the large number of hatch-year migratory birds banded every year at their natal sites, few are resighted or recaptured. Here, we report on the ret...
Article
Selecting a sampling design to monitor multiple species across a broad geographical region can be a daunting task, and often involves tradeoffs between limited resources and the accurate estimation of population abundance and occurrence. Since the 1950s, biological atlases have been implemented in various regions to document the occurrence of plant...
Article
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Gray Jays (Perisoreus canadensis) are resident, boreal birds of northern Wisconsin, typically associated with Black Spruce (Picea mariana) bogs. Gray Jays cache perishable food items for over-winter consumption, and are therefore dependent on cold weather and the antibacterial and antifungal properties of the Black Spruce trees in which they store...
Article
Prescribed fire is an often-used tool for managing or manipulating wildlife habitats. However, studies on the effects of prescribed fire on conservation-priority songbirds are limited. We examined effects of low-intensity prescribed burns on vegetation structure and composition, and on habitat use of 45 radiotagged male Swainson's warblers (Limnoth...
Article
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During migration, passerines have been observed to utilize habitats not typical of winter or breeding range. But I report observations from Bayfield County, Wisconsin, in May 2013 that were unusual for 3 reasons: I saw species that are typically arboreal foraging on the ground; I saw mixed flocks ground-foraging at fairly high densities; and I saw...
Article
Spruce grouse (Falcipennis canadensis) habitat use varies widely across their range and is not well-understood near the southern extent of their range. Threats to conifers from climate change make understanding habitat use at the southern edge of the range increasingly important. We obtained habitat information on 55 radiocollared spruce grouse in...
Article
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Spruce Grouse (Falcipennis canadensis) are listed as threatened in Wisconsin, and the boreal habitats in which they occur are likely to be threatened by changing climatic conditions. However, the limited information available on Spruce Grouse in the Upper Great Lakes region makes it unclear which habitat features are important for Spruce Grouse nes...
Article
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The summer of 2012 will be remembered by birders in Wisconsin and the entire upper Midwest as the summer of the Dickcissel (Spiza americana). This cardinallike grassland bird that is named for its song is a common summer resident in prairies, hayfields, meadows, and weedy fields in the southern two-thirds of Wisconsin, occasionally reaching large o...
Article
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I report the observation of an apparent Dunlin (Calidris alpina) × White-rumped Sandpiper (C. fuscicollis) hybrid in Ashland and Bayfield Counties, 23–24 May 2012. I present photos taken by Ryan Brady and me and compare the features of this bird to the parent species. This bird was intermediate between the two presumed parent species in a number of...
Article
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We report the observation of an apparent Sutton’s Warbler (Northern Parula; Setophaga americana) × Yellow-throated Warbler; Setophaga dominica) in Brown County, Wisconsin. We detail the discovery of this bird by Jack Swelstad and further observations by Brian Pierce, describe and provide photos of the bird, and summarize the history and current kno...
Article
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We studied a newly established population of Kirtland's Warbler (Dendroica kirtlandii) in Adams County, Wisconsin, nesting in a red pine (Pinus resinosa) plantation. We found eight males and five females in Adams County in 2008 and 10 males and 10 females in 2009. Five of seven (71%) males color-banded in 2008 returned in 2009, and at least eight s...
Article
Estimating habitat availability at large spatial scales is critical for identifying conservation and management priorities for birds. Given the effects of patch size on habitat selection and productivity of many bird species, large-scale approaches often focus on identifying and enumerating patches large enough to support sustainable populations. D...
Article
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Swainson's Warblers (Limnothlypis swainsonii) have been described as terrestrial leaf litter foraging specialists, and are thought to vacate flooded areas entirely. We report Swainson's Warblers occupying a flooded area in Arkansas and foraging on unusual substrates. We observed Swainson's Warblers feeding in novel ways in the tree canopy and on fl...
Article
Full-text available
Understanding factors affecting space-use patterns can lead to improved knowledge of the ecology and habitat needs of a species. We radiotracked 37 male Swainson's Warblers (Limnothlypis swainsonii) at two sites in eastern Arkansas, White River National Wildlife Refuge, a bottomland site, and St. Francis National Forest, a site with birds in both b...
Article
Numerous factors, including nest predation and brood parasitism, may limit populations of neotropical migratory birds. However, nest predation and brood parasitism are not constant, and temporal, biological, habitat, and landscape factors can affect the likelihood of these events. Understanding these patterns is important for species of conservatio...
Article
Full-text available
Published as T. J. Benson, N. M. Anich, J. D. Brown, and J. C. Bednarz. 2009. Swainson’s Warbler Nest-Site Selection in Eastern Arkansas. Condor 111(4):694–705. © 2009 by the Regents of the University of California/Cooper Ornithological Society. Copying and permissions notice: Authorization to copy this content beyond fair use (as specified in Sect...
Article
Although radio telemetry can provide useful information, the possible negative effects of transmitters, including biased results and detrimental effects on the birds, must also be considered. Several investigators have examined the effects of transmitters on larger birds, but few have examined their possible long-term effects, as assessed by return...

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