Black-and-white Warbler (Mniotilta varia)

Kricher, John

doi:10.2173/bna.158

Cited by 12 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Specifically, we tested four predictions using diets of five sympatric species of migratory warblers in shaded coffee plantations in Jamaica by largely controlling for habitat and food availability: (1) overlap of prey taxa should be considerable due to foraging opportunism, (2) different migrant species should have different diets (i.e., partition resources) due to foraging behavioral and morphological differences, such that the most distinctive foragers, that is, American Redstarts that tend to feed relatively aerially, and Black‐and‐white Warblers that often forage like tree‐creepers on branches and boles (Lack , Morse , Keast et al. , Kricher ), should also have the most distinctive diets, (3) diets of males and females should, as a corollary of (2), differ in species where the two sexes forage differently, i.e., American Redstarts and Black‐throated Blue Warblers in coffee plantation types and strata (Wunderle and Latta , MD Johnson, pers. obs.)…”

Section: Migratory Bird Species Foraging In Jamaican Shade Coffee Plamentioning

confidence: 99%

“…Year and month sampled (N) (i.e., partition resources) due to foraging behavioral and morphological differences, such that the most distinctive foragers, that is, American Redstarts that tend to feed relatively aerially, and Black-and-white Warblers that often forage like tree-creepers on branches and boles (Lack 1976, Morse 1989, Keast et al 1995, Kricher 1995, should also have the most distinctive diets, (3) diets of males and females should, as a corollary of (2), differ in species where the two sexes forage differently, i.e., American Redstarts and Black-throated Blue Warblers in coffee plantation types and strata (Wunderle and Latta 1996, MD Johnson, pers. obs.…”

Section: Speciesmentioning

confidence: 99%

See 1 more Smart Citation

Dietary opportunism, resource partitioning, and consumption of coffee berry borers by five species of migratory wood warblers (Parulidae) wintering in Jamaican shade coffee plantations

et al. 2016

View full text Add to dashboard Cite

Diets reflect important ecological interactions, but are challenging to quantify for foliage‐gleaning birds. We used regurgitated stomach samples from five primarily insectivorous species of long‐distance migrant warblers (Parulidae) wintering in two moderate‐elevation shade coffee farms in Jamaica to assess both foraging opportunism and prey resource partitioning. Our results, based primarily on 6120 prey items in 80 stomach samples collected during a one‐week period in March 2000, confirm opportunism. The diets of all five warblers, including American Redstarts (Setophaga ruticilla), Black‐and‐White Warblers (Mniotilta varia), Black‐throated Blue Warblers (S. caerulescens), Northern Parulas (S. americana), and Prairie Warblers (S. discolor), overlapped strongly based on consumption of the same prey types, even many of the same prey species (4 of 10 interspecific overlaps >0.9, range = 0.74–0.97). Moreover, all five species fed on similarly small, often patchily distributed prey, including coffee berry borers (Hypothenemus hampei; Coleoptera, Curculionidae). Nonetheless, permutational multivariate analysis of variance also revealed that the diets of these species differed significantly, primarily with respect to prey mobility (winged vs. sessile); American Redstarts fed on the most mobile prey, and Northern Parulas on the least mobile prey and a relatively restricted set of prey taxa compared to the other four species of warblers. Overall, our results suggest both dietary opportunism consistent with a migratory life‐history, and interspecific resource partitioning consistent with differences in morphology and foraging behavior during a food‐limited season. Having provided evidence of the three necessary conditions, namely intraspecific competition, resource limitation, and interspecific overlap in resource use, the results of our study, in combination with those of other studies, also provide evidence of interspecific competition among wintering migrant insectivores. We thus argue that diffuse interspecific exploitative food competition may be more important than previously recognized.

show abstract

Section: Migratory Bird Species Foraging In Jamaican Shade Coffee Plamentioning

confidence: 99%

Section: Speciesmentioning

confidence: 99%

Dietary opportunism, resource partitioning, and consumption of coffee berry borers by five species of migratory wood warblers (Parulidae) wintering in Jamaican shade coffee plantations

et al. 2016

View full text Add to dashboard Cite

show abstract

“…In contrast, observers more consistently detected Black‐and‐white Warblers, Blackpoll Warblers, Black‐throated Green Warblers, Boreal Chickadees, and Magnolia Warblers during playback than during silent periods, but again the impact of playback on detection probability also varied among observers. For this latter group, the increase in visual detections (attributable to more aggressive defense of territory, e.g., Black‐and‐white Warblers; Kricher ) may have contributed to a higher detection probability during playback, although an explanation for the lack of consistency among observers is less apparent. We also identified two observers for whom the effect of playback differed from the rest of the group for several species.…”

Section: Discussionmentioning

confidence: 95%

“…For example, female Swainson's Thrushes respond to predators by silently flushing from the nest or freezing in place, depending on breeding stage, and males move quietly throughout their territories and deliver single “whit” call notes (Mack and Yong ). In contrast, Black‐and‐white Warblers aggressively protect their territories against intrusion (Kricher ), likely contributing to their increased detectability during playback. Still, participation in mobbing behavior does not necessarily mean detection rates will increase with playback.…”

Section: Discussionmentioning

confidence: 99%

Variable effect of playback of chickadee mobbing calls on detection probability of boreal forest birds

2015

View full text Add to dashboard Cite

Modification of the point count survey method to include playback of songbird mobbing calls in an attempt to increase detection probabilities has met with mixed success. We compared detection probabilities for boreal forest songbirds using traditional point count methods and counts using broadcasts of the mobbing calls of Black-capped Chickadees (Poecile atricapillus) in an attempt to increase detection probability. We conducted 594 point counts during the 2010 breeding season in Newfoundland, Canada. Each point count consisted of an 8-min silent observation period followed by an 8-min broadcast of Black-capped Chickadee mobbing calls. Occupancy model results showed that response to playback broadcast varied across species, with detection probabilities higher for seven of 17 species during the silent portions of point counts and three species more likely to be detected during playback intervals. For all species, the number of visual detections increased during periods of playback and, averaged across species, individuals were >6 times more likely to be seen during the playback period than during the silent period. Differences in detection probability among observers were apparent during both silent and playback periods. We suggest that using playback of chickadee mobbing calls during point count surveys of common boreal forest songbird species may be most beneficial when visual detection is important. However, playback may also be useful for species-specific surveys during periods when birds are less likely to be vocal or for studies of less common species with chronically low detection probabilities. A combined silent and playback approach could also be useful, although observer and species differences should be accounted for if comparing data across species or studies. RESUMEN. Efecto variable de las grabaciones de conducta de turbas en Poecile atricapillus, en la probabilidad de detectar aves en un bosque borealModificaciones en los conteos de puntos, para incluir grabaciones de llamadas de turbas, en el intento de incrementar las probabilidades de detección de aves han tenido resultados mixtos. Comparamos la probabilidad de detección para aves en bosques boreales, utilizando conteos de puntos tradicionales y llamadas de turbas del Carbonero Cabecinegro (Poecile atricapillus), en un intento de incrementar la probabilidad de detección de aves. Se condujeron 594 conteos de puntos durante el periodo reproductivo del 2010, en Newfoundland, Canadá. Cada punto consistió de 8 minutos de observación en silencio, seguido de 8 minutos de una grabación de la llamada de turba del Carbonero Cabecinegro. El modelo utilizado mostró que la respuesta a las grabaciones varía entre especies, con una alta probabilidad de detección de siete de 17 especies durante los periodos de silencio y de tres especies adicionales durante la exposición a grabaciones. Para todas las especies, el número de detecciones visuales incrementó durante los periodos de uso de grabaciones y el promedio entre todas estas, resultó con una probabilidad seis...

show abstract

“…Black-and-white Warblers (Mniotila varia) (9 -15 g) also are ground nesters and found throughout much of the eastern and central United States and Canada (Kricher 1995). Nests are often located along hillsides or ravines (Harrison 1975) in open-woods, second-growth and mature forests (Kricher 1995). Usually 5 eggs are laid and incubated by the female for 10 days before hatching .…”

Section: Study Speciesmentioning

confidence: 99%

Post-fledging ecology and survival of neotropical migratory songbirds on a managed Appalachian forest

Dellinger¹

View full text Add to dashboard Cite

POST-FLEDGING ECOLOGY AND SURVIVAL OF NEOTROPICAL MIGRATORY SONGBIRDS ON A MANAGED APPALACHIAN FOREST TIM DELLINGER During the post-fledging period, some juvenile songbirds appear to require early successional habitats at some level, suggesting that disturbance (whether natural or anthropogenic) in the landscape is important. Previous studies of juvenile Wood Thrushes (Hylocichla mustelina) have found them in early successional areas in which adults do not nest. My objective was to determine how juvenile Wood Thrushes used areas harvested through various silvicultural techniques within a forested landscape. I examined settled areas, habitat use, survival, and daily movements of 55 radio-tagged juvenile Wood Thrushes on a managed forest in the central Appalachian mountains of West Virginia during 2004 to 2005. I tagged individuals as nestlings and as juveniles, and radio-tracked birds in the natal and post-natal period. I used Global Positioning Systems to record the location of each bird on a daily basis and sampled habitat variables at these locations. All locations were assigned to one of three landcovers (mature forest, sawtimber harvests, and early successional areas) on a digitized map of the study site. I examined the proportion of daily locations within each landcover. I measured the size of harvests and related size and age to use by juvenile Wood Thrushes. Once independent from adults, most individuals preferred early successional areas, in particular large, older clearcuts, >13-ha in size and 7-11 years post harvest. Overall, radiotagged Wood Thrushes tended to move from open areas to those with a denser understory as they transitioned from being dependent on adults to being independent. Survival was similar among cover types (natal: P = 0.7, mature forest 91%, sawtimber harvest 80%, early successional area 88%; post-natal: 100% among all cover types). Radio-tagged juvenile Wood Thrushes on my study remained in the natal areas approximately 3 weeks before moving to post-natal sites. Similar to other studies, some individuals were located in up to 4 separate post-natal sites prior to migration or transmitter battery failure. Sizes of and duration within settled areas were similar to those documented in previous studies but distances between settled sites were shorter (natal to initial post-natal: x = vii TABLE OF CONTENTS

show abstract

Black-and-white Warbler (Mniotilta varia)

Cited by 12 publications

References 0 publications

Dietary opportunism, resource partitioning, and consumption of coffee berry borers by five species of migratory wood warblers (Parulidae) wintering in Jamaican shade coffee plantations

Dietary opportunism, resource partitioning, and consumption of coffee berry borers by five species of migratory wood warblers (Parulidae) wintering in Jamaican shade coffee plantations

Variable effect of playback of chickadee mobbing calls on detection probability of boreal forest birds

Post-fledging ecology and survival of neotropical migratory songbirds on a managed Appalachian forest

Contact Info

Product

Resources

About