Territorial Responses of Boreal Forest Birds to Habitat Gaps

Rail, Jean‐François; Darveau, Marcel; Desrochers, André; Huot, Jean

doi:10.2307/1370150

Cited by 64 publications

(52 citation statements)

References 9 publications

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“…Taped playbacks of bird songs or calls offer particular promise for providing this motivation in avian studies. For example, species-specific territorial songs have been used to quantify the willingness of forest birds to enter different matrix types (Sieving et al 1996) and to cross gaps of open area up to 100 m adjacent to their territories (Rail et al 1997). Desrochers and Hannon (1997) generalized this method to nonterritorial situations by using recordings of the mobbing calls of Black-capped Chickadees (Poecile atricapillus) to study the postbreeding dispersal of several forest species.…”

Section: Introductionmentioning

confidence: 99%

Winter Responses of Forest Birds to Habitat Corridors and Gaps

Clair¹,

Bélisle²,

Desrochers³

et al. 1998

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Forest fragmentation and habitat loss may disrupt the movement or dispersal of forest-dwelling birds. Despite much interest in the severity of these effects and ways of mitigating them, little is known about actual movement patterns in different habitat types. We studied the movement of wintering resident birds, lured by playbacks of mobbing calls, to compare the willingness of forest birds to travel various distances in continuous forest, along narrow corridors (fencerows), and across gaps in forest cover. We also quantified the willingness of Black-capped Chickadees (Poecile atricapillus) to cross gaps when alternative forested detour routes were available. All species were less likely to respond to the calls as distance increased to 200 m, although White-breasted Nuthatches (Sitta carolinensis) and Hairy Woodpeckers (Picoides villosus) were generally less likely to respond than chickadees and Downy Woodpeckers (P. pubescens). Chickadees were as likely to travel in corridors as in continuous forest, but were less likely to cross gaps as the gap distance increased. The other species were less willing to travel in corridors and gaps relative to forest, and the differences among habitats also increased with distance. For chickadees, gap-crossing decisions in the presence of forested detours varied over the range of distances that we tested, and were primarily influenced by detour efficiency (the length of the shortcut relative to the available detour). Over short distances, birds used forested detours, regardless of their efficiency. As absolute distances increased, birds tended to employ larger shortcuts in the open when detour efficiency was low or initial distance in the open was high, but they limited their distance from the nearest forest edge to 25 m. Thus, chickadees were unwilling to cross gaps of > 50 m when they had forested alternatives, yet they sometimes crossed gaps as large as 200 m when no such choice existed. Our results suggest that the presence of corridors enhanced the movement of some, but not all, forest birds, and that even chickadees, which were less sensitive to gap width, preferred not to venture far from forest cover.

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Section: Introductionmentioning

confidence: 99%

Winter Responses of Forest Birds to Habitat Corridors and Gaps

Clair¹,

Bélisle²,

Desrochers³

et al. 1998

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show abstract

“…Cela suggère qu'il est en mesure d'utiliser les ressources disponibles dans les bandes de bleuets et qu'il n'est pas trop affecté par la fragmentation de l'habitat ou la perte d'habitat. Cette espèce, comme le bruant à gorge blanche, a tendance à traverser plus facilement les trouées sans arbres que les espèces forestières (Rail et al 1997 (Wiens 1973), la toundra (Weatherhead 1979), les pâturages (Bolllnger 1995) et les champs en culture (Patterson et Best 1996). Par ailleurs, les différences entre la pinède et la (Darveau et al 1995).…”

Section: Analyse De Diversitéunclassified

Réaction des micromammifères et des oiseaux à l'aménagement forêt/bleuet dans des pinèdes grises de l'ouest du lac Saint-Jean /

Lavoie¹

2009

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“…Among forest birds, habitat generalists (Sieving et al, 1996;Rail et al, 1997), large species (Brooker et al, 1999;Grubb and Doherty, 1999) and species with larger area requirements (Dale et al, 1994) are more likely to cross-gaps between forest patches. In contrast, some forest specialists (Rich et al, 1994;Sieving et al, 1996;Bright, 1998) and small understory birds (Karr, 1982) are reluctant to cross-open areas and use woodland corridors to move between patches (Haas, 1995;Haddad, 1999a).…”

Section: Introductionmentioning

confidence: 99%

“…Third, I examined whether movements differ among habitat guilds and species. Habitat generalists and open-edge species may cross-boundaries more frequently than forest specialists because they use open areas (Rail et al, 1997;Cassady St. Clair et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Movement of forest birds across river and clearcut edges of varying riparian buffer strip widths

Shirley

2006

Forest Ecology and Management

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Territorial Responses of Boreal Forest Birds to Habitat Gaps

Cited by 64 publications

References 9 publications

Winter Responses of Forest Birds to Habitat Corridors and Gaps

Winter Responses of Forest Birds to Habitat Corridors and Gaps

Réaction des micromammifères et des oiseaux à l'aménagement forêt/bleuet dans des pinèdes grises de l'ouest du lac Saint-Jean /

Movement of forest birds across river and clearcut edges of varying riparian buffer strip widths

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