Winter Microhabitat Foraging Preferences of Sympatric Boreal and Black-capped chickadees in Michigan's Upper Peninsula

Gayk, Zach G.; Lindsay, Alec R.

doi:10.1676/1559-4491-124.4.820

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…atricapillus segregate when foraging during the breeding (Vassallo & Rice 1982) and nonbreeding seasons (Gayk & Lindsay 2012). Vassallo and Rice (1982)…”

Section: Discussionmentioning

confidence: 99%

“…Chickadees feed in the upper and outer portions of trees, independent of tree height, whereas Black-capped Chickadees feed in the lower half and inner portions of trees and use a wider variety of tree species (i.e., deciduous and coniferous trees, Vassallo & Rice 1982). Gayk and Lindsay (2012) showed that, during the winter in Michigan, USA, Boreal Chickadees feed exclusively within conifer species and spend significantly more time foraging in the top 3 m of trees, as compared to Black-capped Chickadees.…”

Section: Demonstrated That Borealmentioning

confidence: 99%

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Using microphone arrays to investigate microhabitat selection by declining breeding birds

Ethier

Wilson

2019

Ibis

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Understanding the microhabitat preferences of animals can help managers to develop better conservation and recovery strategies, but is challenging. Traditional methods are limited by cost, accuracy, and human resources. In this study, we investigated avian microhabitat preferences using microphone arrays that are capable of accurately localizing vocalizing birds. Our objective was to identify the microhabitat associations of two common species in steep population decline, the Boreal Chickadee Poecile hudsonicus and the Cape May Warbler Setophaga tigrina. We deployed 68 eight-channel arrays at random locations in Labrador, Canada during the 2016 avian breeding season. We returned in 2017 to the 18 array locations where the target species had been detected the previous year and characterized the microhabitat at the exact locations where they had been detected. We also characterized the microhabitat at randomly determined control locations. Results show that Boreal Chickadees select trees with greater diameter-at-breastheight that are surrounded by greater stem density. We did not find evidence that Cape May Warblers exhibit microhabitat selection during song production. The study shows that microphone arrays are an effective tool for identifying preferred microhabitat that could be incorporated into future conservation or recovery strategies.

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“…atricapillus segregate when foraging during the breeding (Vassallo & Rice 1982) and nonbreeding seasons (Gayk & Lindsay 2012). Vassallo and Rice (1982)…”

Section: Discussionmentioning

confidence: 99%

Section: Demonstrated That Borealmentioning

confidence: 99%

Using microphone arrays to investigate microhabitat selection by declining breeding birds

Ethier

Wilson

2019

Ibis

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“…Human actions leading to habitat fragmentation and loss are constantly threatening biodiversity around the world (Gayk & Lindsay 2012). Human activities have encroached on waterbird habitats, putting them at a greater risk.…”

Section: Introductionmentioning

confidence: 99%

Waterbird assemblage along Punatsangchhu River, Punakha and Wangdue Phodrang, Bhutan

Nima¹,

Dorji

2022

J. Threat. Taxa

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Crossing Bhutan is one of the shortest transits, and Bhutan holds the main breeding refuge/habitats for many Central Asian migratory birds. Our study assessed the community structure of waterbirds along the Punatsangchhu River basin, located towards the western part of Bhutan. The study determined the species composition, habitat use and preference of waterbirds, together with the different habitats present. Furthermore, the study examined the potential drivers of habitat fragmentation along the river. The entire study area was classified into five different habitats: dam, dredged area, farmland, urban, and pristine. The Cummings method of habitat assessment for high gradient river and streams was used to assess the habitat variables such as bank stability, vegetative protection and the riparian vegetation zone along the river and the association with the diversity of aquatic birds. A questionnaire survey was also used to evaluate the degree of threats caused by human disturbances. Among the five habitats, the dam area recorded the highest diversity (H` = 2.13) against their total count of 103 (8.7%) and the least diversity was recorded from farmland area (H` = 1.1) against their total count of 282 (23.8%) birds. Most waterbirds preferred an open area with shallow river depth. Habitats with emergent vegetation negatively correlated with the waterbird species composition. The study also recorded one Vulnerable species Aythya ferina, one Near Threatened species Vanellus duvaucelii, and one Endangered species Haliaeetus leucoryphus. Punatsangchhu is a major habitat to both resident and migratory waterbirds which stop here enroute from the Palaearctic and Indo-Malayan Region corroborating the need for habitat conservation and management regimes in the basin.

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The importance of tree species identity and trait-based winter foraging ecology of bark-foraging bird species in a large Central European floodplain forest

Ónodi,

Botta-Dukát,

Winkler

et al. 2024

Biodivers Conserv

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Beyond preferences for particular species of tree, bark-foraging birds are associated with various tree characteristics such as decay stage, trunk diameter, or bark roughness. Our objectives were to study the winter foraging ecology of different bark-foraging bird species in the highly diverse floodplain forests of Donau-Auen National Park (Austria) by examining the importance of tree species and characteristics. We used 'first-foraging' observations on the great spotted woodpecker (Dendrocopos major), middle spotted woodpecker (Leiopicus medius), Eurasian nuthatch (Sitta europaea), treecreepers (Certhia spp.), great tit (Parus major), Eurasian blue tit (Cyanistes caeruleus), and marsh tit (Poecile palustris). We examined bird-tree relationships with a bird-plant network approach, where we compared traits of trees and their preferences among avian species. The five most important tree species relative to distance-weighted fragmentation were European white elm (Ulmus laevis), pedunculate oak (Quercus robur), common ash (Fraxinus excelsior), and white and black poplar (Populus alba, P. nigra). Avian taxa differed only in the use of tree condition, where woodpeckers used decayed and dead trees more than tits. Most species preferred trees of larger trunk diameter with rougher bark. We suspect that changes in these highly diverse floodplain forest stands will eventually lead to changes in bark-foraging bird assemblages. For the protection of such highly diverse floodplain forests, conservation-based water management practices will be crucial to maintaining a sufficient groundwater table. Our findings also suggest that forest management practices should focus on more diverse commercial forest stands with a critical amount of secondary tree species, a variety of size classes, varying tree conditions, and species with different bark roughness classes.

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Winter Microhabitat Foraging Preferences of Sympatric Boreal and Black-capped chickadees in Michigan's Upper Peninsula

Cited by 4 publications

References 13 publications

Using microphone arrays to investigate microhabitat selection by declining breeding birds

Using microphone arrays to investigate microhabitat selection by declining breeding birds

Waterbird assemblage along Punatsangchhu River, Punakha and Wangdue Phodrang, Bhutan

The importance of tree species identity and trait-based winter foraging ecology of bark-foraging bird species in a large Central European floodplain forest

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