First Description of Nests and Eggs of Two Hispaniolan Endemic Species: Western Chat-tanager (Calyptophilus tertius) and Hispaniolan Highland-tanager (Xenoligea montana)

Rimmer, Christopher C.; Woolaver, Lance G.; Nichols, Rina K.; Fernández, Eladio M.; Latta, Steven C.; Garrido, Esteban G.

doi:10.1676/06-184.1

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…We also analyzed standardized capture rates for the two most common non-endemic residents (Rufous-throated Solitaire ( Myadestes genibarbis ) and Greater Antillean Bullfinch ( Loxigilla violacea )) and the three most frequently encountered North American migrants at our sites: Bicknell’s Thrush, Ovenbird ( Seiurus aurocapilla ), and Black-throated Blue Warbler ( Setophaga caerulescens ). All of the resident species that we captured breed regularly at both sites ( Rimmer et al, 2008 ; CC Rimmer, 2015, unpublished data).…”

Section: Methodsmentioning

confidence: 99%

Assessing conservation status of resident and migrant birds on Hispaniola with mist-netting

Lloyd¹,

Rimmer²,

McFarland³

2016

PeerJ

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We analyzed temporal trends in mist-net capture rates of resident (n = 8) and overwintering Nearctic-Neotropical migrant (n = 3) bird species at two sites in montane broadleaf forest of the Sierra de Bahoruco, Dominican Republic, with the goal of providing quantitative information on population trends that could inform conservation assessments. We conducted sampling at least once annually during the winter months of January–March from 1997 to 2010. We found evidence of declines in capture rates for three resident species, including one species endemic to Hispaniola. Capture rate of Rufous-throated Solitaire (Myadestes genibarbis) declined by 3.9% per year (95% CL = 0%, 7.3%), Green-tailed Ground-Tanager (Microligea palustris) by 6.8% (95% CL = 3.9%, 8.8%), and Greater Antillean Bullfinch (Loxigilla violacea) by 4.9% (95% CL = 0.9%, 9.2%). Two rare and threatened endemics, Hispaniolan Highland-Tanager (Xenoligea montana) and Western Chat-Tanager (Calyptophilus tertius), showed statistically significant declines, but we have low confidence in these findings because trends were driven by exceptionally high capture rates in 1997 and varied between sites. Analyses that excluded data from 1997 revealed no trend in capture rate over the course of the study. We found no evidence of temporal trends in capture rates for any other residents or Nearctic-Neotropical migrants. We do not know the causes of the observed declines, nor can we conclude that these declines are not a purely local phenomenon. However, our findings, along with other recent reports of declines in these same species, suggest that a closer examination of their conservation status is warranted. Given the difficulty in obtaining spatially extensive, long-term estimates of population change for Hispaniolan birds, we suggest focusing on other metrics of vulnerability that are more easily quantified yet remain poorly described, such as extent of occurrence.

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Section: Methodsmentioning

confidence: 99%

Assessing conservation status of resident and migrant birds on Hispaniola with mist-netting

Lloyd¹,

Rimmer²,

McFarland³

2016

PeerJ

Self Cite

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“…We aged and sexed all North American species using standard criteria according to Pyle (1997) and all resident species using criteria available in field guides (Latta et al, 2006) Manuscript to be reviewed (Setophaga caerulescens). All of the resident species that we captured breed regularly at both sites (Rimmer et al, 2008;CC Rimmer, unpublished data). We assumed that the number of captures of each species could be approximated by the…”

Section: Methodsmentioning

confidence: 99%

Peer Review #2 of "Assessing conservation status of resident and migrant birds on Hispaniola with mist-netting (v0.1)"

Pichorim¹

2016

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We analyzed temporal trends in mist-net capture rates of resident (n = 8) and overwintering Nearctic-Neotropical migrant (n = 3) bird species at two sites in montane broadleaf forest of the Sierra de Bahoruco, Dominican Republic, with the goal of providing quantitative information on population trends that could inform conservation assessments. We conducted sampling at least once annually during the winter months of January-March from 1997-2010. We found evidence of declines in capture rates for three resident species, including one species endemic to Hispaniola. Capture rate of Rufous-throated Solitaire (Myadestes genibarbis) declined by 3.9% per year (95% CL = 0%, 7.3%), Green-tailed Ground-Tanager (Microligea palustris) by 6.8% (95% CL = 3.9%, 8.8%), and Greater Antillean Bullfinch (Loxigilla violacea) by 4.9% (95% CL = 0.9%, 9.2%). Two rare and threatened endemics, Hispaniolan Highland-Tanager (Xenoligea montana) and Western Chat-Tanager (Calyptophilus tertius), showed statistically significant declines, but we have low confidence in these findings because trends were driven by exceptionally high capture rates in 1997 and varied between sites. Analyses that excluded data from 1997 revealed no trend in capture rate over the course of the study. We found no evidence of temporal trends in capture rates for any other residents or Nearctic-Neotropical migrants. We do not know the causes of the observed declines, nor can we conclude that these declines are not a purely local phenomenon. However, our findings, along with other recent reports of declines in these same species, suggest that a closer examination of their conservation status is warranted. Given the difficulty in obtaining spatially extensive, long-term estimates of population change for Hispaniolan birds, we suggest focusing on other metrics of vulnerability that are more easily quantified yet remain poorly described, such as extent of occurrence.

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“…We decided that sample sizes of all of the remaining endemics were too small (< 23 individuals across all years) to support reliable statistical analysis. We also analyzed standardized capture rates for the two most common non-endemic (Latta et al, 2006), all of the resident species that we captured breed regularly at both sites (Rimmer et al, 2008;CC Rimmer, unpublished data). We assumed that the number of captures of each species could be approximated by the…”

Section: Methodsmentioning

confidence: 99%

Assessing conservation status of resident and migrant birds on Hispaniola with constant-effort mist-netting

Lloyd¹,

Rimmer²,

McFarland³

2015

Preprint

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We analyzed temporal trends in mist-net capture rates of resident (n = 8) and overwintering Nearctic-Neotropical migrant (n = 3) bird species at two sites in montane broadleaf forest of the Sierra de Bahoruco, Dominican Republic, with the goal of providing quantitative information on population trends that could inform conservation assessments.We conducted sampling at least once annually during the winter months of JanuaryMarch from 1997 -2010. We found evidence of steep declines in capture rates for three resident species, including one species endemic to Hispaniola. Capture rate of Rufousthroated Solitaire (Myadestes genibarbis) declined by 3.9% per year (95% CL = 0%, 7.3%), Green-tailed Ground-Tanager (Microlegia palustris) by 6.8% (95% CL = 3.9%, 8.8%), and Greater Antillean Bullfinch (Loxigilla violacea) by 4.9% (95% CL = 0.9%, 9.2%). Two rare and threatened endemics, Hispaniolan Highland-Tanager (Xenolegia montana) and Western Chat-Tanager (Calyptophilus tertius), showed statistically significant declines, but we have low confidence in these findings because trends were driven by exceptionally high capture rates in 1997 and varied between sites. Analyses that excluded data from 1997 revealed no trend in capture rate over the course of the study. We found no evidence of temporal trends in capture rates for any other residents or Nearctic-Neotropical migrants. We do not know the causes of the observed declines, nor can we conclude that these declines are not a purely local phenomenon. However, our findings, along with other recent reports of declines in these same species, suggest that a closer examination of their conservation status is warranted. Given the difficulty in obtaining spatially extensive, longterm estimates of population change for Hispaniolan birds, we suggest focusing on other metrics of vulnerability that are more easily quantified yet remain poorly described, such as extent of occurrence.

show abstract

First Description of Nests and Eggs of Two Hispaniolan Endemic Species: Western Chat-tanager (Calyptophilus tertius) and Hispaniolan Highland-tanager (Xenoligea montana)

Cited by 8 publications

References 9 publications

Assessing conservation status of resident and migrant birds on Hispaniola with mist-netting

Assessing conservation status of resident and migrant birds on Hispaniola with mist-netting

Peer Review #2 of "Assessing conservation status of resident and migrant birds on Hispaniola with mist-netting (v0.1)"

Assessing conservation status of resident and migrant birds on Hispaniola with constant-effort mist-netting

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