Hooded Warbler (Setophaga citrina)

Chiver, Ioana; Ogden, Lesley J. Evans; Stutchbury, Bridget J. M.

doi:10.2173/bna.110

Cited by 34 publications

(16 citation statements)

References 22 publications

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“…Model indigo buntings and hooded warblers (Annand and Thompson 1997, Payne 2006, Chiver et al 2011. Nevertheless, most of the clearcuts in our study were relatively large compared to the minimum area requirements reported for shrubland birds elsewhere (Costello et al 2000, Roberts andKing 2017).…”

Section: Speciesmentioning

confidence: 44%

Response of shrubland birds to regenerating clearcut area and shape

et al. 2019

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Conservation of birds that breed in early‐successional forests will require an understanding of their response to patch size and shape during the early seral stages following disturbance. We modeled the effects of patch area, patch shape, and time period following harvest on territory densities of 5 shrubland bird species and bird community composition in 36 clearcuts from 1997 to 2014 in the Missouri Ozarks, USA. Our best‐supported models indicated that densities of indigo bunting (Passerina cyanea), yellow‐breasted chat (Icteria virens), and prairie warbler (Setophaga discolor) declined from the early time period (1–7 years post‐harvest) to the late time period (12–18 years post‐harvest), regardless of clearcut area or shape. Yellow‐breasted chat density and bird species richness were positively related to clearcut shape complexity. Bird species richness increased, and bird species density decreased with clearcut area during both time periods. Non‐metric multidimensional scaling indicated that bird community composition was strongly related to time since harvest. Within the spatial scale of our study, successional stage is more influential than clearcut size and shape, and some bird species may benefit from relatively small or irregularly shaped clearcuts. © 2019 The Wildlife Society.

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Section: Speciesmentioning

confidence: 44%

Response of shrubland birds to regenerating clearcut area and shape

et al. 2019

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“…Based on stable isotope studies, evidence suggests that the Ontario population uses stopover sites in the gulf coast of the USA during the spring and fall migration (Langin et al 2009). Populations over-winter from east-central Mexico to Belize (Ogden and Stutchbury 1994). We used habitat quality and density-dependent estimates from this species and closely related wood-warblers (Black-throated Blue Warbler Dendroica caerulescens, American Redstart Setophaga ruticilla, and Wilson's Warbler Wilsonia pusilla; see Appendix and Table A1 in the ESM) and assumed that the size of the stopover habitat was equal to half of the available breeding/wintering habitat.…”

Section: Application Of the Modelmentioning

confidence: 99%

The importance of stopover habitat for developing effective conservation strategies for migratory animals

2011

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Although stopover habitats are used by many species as refuelling stations during migration and can be critical for survival and successful reproduction, they are rarely incorporated in year-round population models and conservation strategies. We incorporate stopover habitat into a density-dependent population model and then use this model to examine how optimizing one-time land purchase strategies for a migratory population is influenced by variation in the quality and the strength of density-dependence in a stopover habitat used for both fall and spring migration. As the strength of the density-dependence in the stopover habitat increases, the optimal amount of stopover habitat purchased increases while the amount of habitat during the stationary periods of the annual cycle (breeding and wintering) decreases. Any change in the cost of purchasing stopover habitat affects investment strategies in all three periods of the annual cycle. When the quality of the stopover habitat is high, the optimal strategy is to invest in low-quality habitat during breeding and wintering and when the stopover habitat quality is low, the optimal strategy switches to investing in high-quality habitat during the stationary periods. We apply this model to a threatened warbler population and demonstrate how purchase decisions to conserve stopover habitat that are not coordinated with conservation actions on the breeding and wintering grounds can potentially result in a lower population carrying-capacity compared to considering habitat in all three periods of the annual cycle simultaneously. Our model provides potential guidelines for developing conservation strategies for animals that rely on refueling habitats between the stationary breeding and non-breeding periods of the migratory cycle.

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“…We show how our model can be applied to estimate the optimal amount of breeding and wintering habitat for the hooded warbler ( Wilsonia citrina) , a 10 g migratory passerine that winters from east‐central Mexico to Belize (Ogden & Stutchbury 1994). Hooded warblers are listed as “threatened” under the Canada Species at Risk Act (COSEWIC 2000) with the only Canadian breeding population located in southwestern Ontario.…”

Section: Application Of the Modelmentioning

confidence: 99%

Optimal conservation planning for migratory animals: integrating demographic information across seasons

Sheehy

Taylor

McCann

et al. 2010

Conservation Letters

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Conservation strategies for migratory animals are typically based on ad-hoc or simple ranking methods and focus on a single period of the annual cycle. We use a density-dependent population model to examine one-time land purchase strategies for a migratory population with a breeding and wintering grounds. Under equal rates of habitat loss, we show that it is optimal to invest more, but never solely, in the habitat with the higher density dependence to habitat cost ratio. When there are two habitats that vary in quality within a season, the best strategy is to invest only in one habitat. Whether to purchase highor low-quality habitat depends on the general life history of the species and the ratio of habitat quality to habitat cost. When carry-over effects are incorporated, it is almost always optimal to invest in high-quality habitat during the season that produces the carry-over effect. We apply this model to a threatened warbler population and show the optimal strategy is to purchase more breeding than wintering habitat despite the fact that breeding habitat is over ten times more expensive. Our model provides a framework for developing year-round conservation strategies for migratory animals and has important implications for long-term planning and management.

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Hooded Warbler (Setophaga citrina)

Cited by 34 publications

References 22 publications

Response of shrubland birds to regenerating clearcut area and shape

Response of shrubland birds to regenerating clearcut area and shape

The importance of stopover habitat for developing effective conservation strategies for migratory animals

Optimal conservation planning for migratory animals: integrating demographic information across seasons

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