Conserving Stopover Sites for Forest-Dwelling Migratory Landbirds

Mehlman, David W.; Mabey, Sarah E.; Ewert, David N.; Duncan, Charles D.; Abel, Becky; Cimprich, David A.; Sutter, Robert; Woodrey, Mark S.

doi:10.1642/0004-8038(2005)122[1281:cssffm]2.0.co;2

Cited by 125 publications

(124 citation statements)

References 41 publications

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“…These structures can pose a significant threat to migrant songbirds, particularly during takeoffs, landings, and short flights (Crawford and Engstrom 2001, Hüppop et al 2006, Longcore et al 2012. In turn, predictable differences in behavior-as observed in the present study-can lead to systematic differences in risk and possible implications for population dynamics (Cristol et al 1999, Mehlman et al 2005, Longcore and Smith 2013 …”

Section: Conservation Implicationsmentioning

confidence: 61%

Prolonged stopover and consequences of migratory strategy on local-scale movements within a regional songbird staging area

Smetzer

King

2018

The Auk

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Section: Conservation Implicationsmentioning

confidence: 61%

Prolonged stopover and consequences of migratory strategy on local-scale movements within a regional songbird staging area

Smetzer

King

2018

The Auk

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“…Density estimates, considered in combination with other factors, may therefore be one of the most cost-effective and efficient means of assessing habitat quality. This does not preclude, however, the initial establishment of evidence for multiday stopovers (Delmore et al 2012) and active energy deposition (Bayly et al 2013), because high densities can occur at sites rarely used for fueling, e.g., sites used in emergencies, often referred to as "fire escapes" (Mehlman et al 2005). Our finding that densities were not uniform but varied between transects, presumably because of flocking behavior or clumped resources, e.g., fruiting trees, emphasizes the importance of surveying a representative area of the habitats of interest (Thomas et al 2010).…”

Section: Indicators Of Habitat Qualitymentioning

confidence: 99%

“…Given the urgent need to identify and prioritize the stopover regions and habitats used by long-distance migrants (Mehlman et al 2005, Faaborg et al 2010, observational studies combining density estimation with foraging observations could rapidly provide us with vital baseline information. That said it must first be established that focal species are undergoing multiday stopovers because these measures will not serve their purpose at sites where (transient) migrants only stop to rest between nocturnal flights.…”

Section: Indicators Of Habitat Qualitymentioning

confidence: 99%

Prioritizing tropical habitats for long-distance migratory songbirds: an assessment of habitat quality at a stopover site in Colombia

Bayly¹,

Gómez²,

Hobson³

et al. 2016

ACE

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ABSTRACT. Long-distance migratory birds are declining globally and migration has been identified as the primary source of mortality in this group. Despite this, our lack of knowledge of habitat use and quality at stopovers, i.e., sites where the energy for migration is accumulated, remains a barrier to designing appropriate conservation measures, especially in tropical regions. There is therefore an urgent need to assess stopover habitat quality and concurrently identify efficient and cost-effective methods for doing so. Given that fuel deposition rates directly influence stopover duration, departure fuel load, and subsequent speed of migration, they are expected to provide a direct measure of habitat quality and have the advantage of being measurable through body-mass changes. Here, we examined seven potential indicators of quality, including body-mass change, for two ecologically distinct Neotropical migratory landbirds on stopover in shade-coffee plantations and tropical humid premontane forest during spring migration in Colombia: (1) rate of body-mass change; (2) foraging rate; (3) recapture rate; (4) density; (5) flock size; (6) age and sex ratios; and (7) body-mass distribution. We found higher rates of mass change in premontane forest than in shade-coffee in Tennessee Warbler Oreothlypis peregrina, a difference that was mirrored in higher densities and body masses in forest. In Gray-cheeked Thrush Catharus minimus, a lack of recaptures in shade-coffee and higher densities in forest, also suggested that forest provided superior fueling conditions. For a reliable assessment of habitat quality, we therefore recommend using a suite of indicators, taking into account each species' ecology and methodological considerations. Our results also imply that birds stopping over in lower quality habitats may spend a longer time migrating and require more stopovers, potentially leading to important carryover effects on reproductive fitness. Evaluating habitat quality is therefore imperative prior to defining the conservation value of newly identified stopover regions.Priorisation de milieux tropicaux visant des passereaux migrateurs de longue distance : évaluation de la qualité de l'habitat dans une halte migratoire en Colombie RÉSUMÉ. Les oiseaux migrateurs de longue distance sont en diminution sur la planète et la migration a été pointée du doigt comme source primaire de mortalité chez ce groupe. Malgré ce constat, notre manque de connaissance sur l'utilisation et la qualité de l'habitat aux haltes migratoires -c.-à-d. les sites où les oiseaux accumulent l'énergie en vue de la migration -limite notre capacité à déterminer les mesures de conservation appropriées, spécialement dans les régions tropicales. L'évaluation de la qualité de l'habitat aux haltes est donc urgente, de même que la détermination de méthodes efficaces et rentables pour s'y prendre. Étant donné que les taux d'accumulation d'énergie influent directement sur la durée de séjour aux haltes, la charge d'énergie au départ d'une halte et la vitesse subséqu...

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“…Equally, the functional role of a specific stopover site to meet migrants' needs is highly dynamic, as it is based on resource availability, landscape context, physiological condition of migrants and mortality risks (Mehlman et al, 2005). Although the survival and recuperation of migratory birds depend on the availability of resource at stopovers, knowledge about site selection where birds forage is still lacking (Newton, 2008).…”

Section: Stopover Selectionmentioning

confidence: 99%

“…It is recommended that specific attention should be given to stopover sites, as the functional role of a given stopover site in meeting the needs of migrants is highly dynamic with respect to resource availability, landscape context, the physiological condition of the migrants and mortality risks (Mehlman et al, 2005). Moreover, with recent technological advances, such as satellite tracking allows, to track birds throughout the annual cycle, determine their migratory routes and map the often remote stopovers with great accuracy (Klaassen et al, 2014;Pedrana et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Migration timing and stopover selection for barnacle geese Branta leucopsis

Najafabadi

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Conserving Stopover Sites for Forest-Dwelling Migratory Landbirds

Cited by 125 publications

References 41 publications

Prolonged stopover and consequences of migratory strategy on local-scale movements within a regional songbird staging area

Prolonged stopover and consequences of migratory strategy on local-scale movements within a regional songbird staging area

Prioritizing tropical habitats for long-distance migratory songbirds: an assessment of habitat quality at a stopover site in Colombia

Migration timing and stopover selection for barnacle geese Branta leucopsis

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