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Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds

Mist netting is the most commonly used method for catching birds for scientific ringing, but despite decades of use, there have been few attempts to quantify the associated potential risks to the individuals caught. Any incidence of mortality through capture and handling, however low, is of potentia...

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Autores principales: Clewley, Gary D., Robinson, Robert A., Clark, Jacquie A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5980556/
https://www.ncbi.nlm.nih.gov/pubmed/29876090
http://dx.doi.org/10.1002/ece3.4032
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author Clewley, Gary D.
Robinson, Robert A.
Clark, Jacquie A.
author_facet Clewley, Gary D.
Robinson, Robert A.
Clark, Jacquie A.
author_sort Clewley, Gary D.
collection PubMed
description Mist netting is the most commonly used method for catching birds for scientific ringing, but despite decades of use, there have been few attempts to quantify the associated potential risks to the individuals caught. Any incidence of mortality through capture and handling, however low, is of potential ethical concern and may also introduce biases into the data. We estimate the mortality rate associated with capture of previously ringed (recaptured) passerines from the British and Irish Ringing Scheme (c. 1.5 million records) caught using mist nets. The importance of species, age, mass, month, time, previous captures, and an index of predator occurrence was tested using generalized linear mixed‐effects models. The average mortality rate was 0.0011, most of which was reported to occur before the individuals had been extracted from the nets (c. 70% of incidents). Juveniles appeared to be at higher risk and the incidence of predation from mist nets was seasonal, with increased risk during the winter. Species differed in their reported mortality rates with the apparent risk being greatest for Chiffchaff Phylloscopus collybita (0.0029) and Bullfinch Pyrrhula pyrrhula (0.0027). To improve our understanding (and hence minimize risk in future), we recommend collecting more complete data on incidences of mortality, and also injuries; exercising increased care when the species we have identified as being at greater risk are likely to be captured, and ensuring there are robust procedures for the checking of nets (as most reported incidents of mortality occur before handling). We also recommend that all Ringing Schemes should collate and make available data on capture‐related mortality. Overall rates of mortality associated with capture, although, were low and support the use of mist netting as a safe capture technique, without undue bias from mortality, when used by appropriately trained individuals.
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spelling pubmed-59805562018-06-06 Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds Clewley, Gary D. Robinson, Robert A. Clark, Jacquie A. Ecol Evol Original Research Mist netting is the most commonly used method for catching birds for scientific ringing, but despite decades of use, there have been few attempts to quantify the associated potential risks to the individuals caught. Any incidence of mortality through capture and handling, however low, is of potential ethical concern and may also introduce biases into the data. We estimate the mortality rate associated with capture of previously ringed (recaptured) passerines from the British and Irish Ringing Scheme (c. 1.5 million records) caught using mist nets. The importance of species, age, mass, month, time, previous captures, and an index of predator occurrence was tested using generalized linear mixed‐effects models. The average mortality rate was 0.0011, most of which was reported to occur before the individuals had been extracted from the nets (c. 70% of incidents). Juveniles appeared to be at higher risk and the incidence of predation from mist nets was seasonal, with increased risk during the winter. Species differed in their reported mortality rates with the apparent risk being greatest for Chiffchaff Phylloscopus collybita (0.0029) and Bullfinch Pyrrhula pyrrhula (0.0027). To improve our understanding (and hence minimize risk in future), we recommend collecting more complete data on incidences of mortality, and also injuries; exercising increased care when the species we have identified as being at greater risk are likely to be captured, and ensuring there are robust procedures for the checking of nets (as most reported incidents of mortality occur before handling). We also recommend that all Ringing Schemes should collate and make available data on capture‐related mortality. Overall rates of mortality associated with capture, although, were low and support the use of mist netting as a safe capture technique, without undue bias from mortality, when used by appropriately trained individuals. John Wiley and Sons Inc. 2018-04-26 /pmc/articles/PMC5980556/ /pubmed/29876090 http://dx.doi.org/10.1002/ece3.4032 Text en © 2018 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Clewley, Gary D.
Robinson, Robert A.
Clark, Jacquie A.
Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
title Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
title_full Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
title_fullStr Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
title_full_unstemmed Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
title_short Estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
title_sort estimating mortality rates among passerines caught for ringing with mist nets using data from previously ringed birds
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5980556/
https://www.ncbi.nlm.nih.gov/pubmed/29876090
http://dx.doi.org/10.1002/ece3.4032
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