Proportion of Recovered Waterfowl Bands Reported

Geis, Aelred D.; Atwood, Earl L.

doi:10.2307/3798673

Cited by 11 publications

(17 citation statements)

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“…E. Canada includes birds recovered in ON, QC, NB, NS, PE, or NF. Harvest survey 1 follows methodology of Geis and Atwood (), whereas Harvest survey 2 follows methodology of Padding and Royle (). Solicitation applies to Garrettson et al (), which adjusted reporting estimates for band solicitation by agency personnel (solicited bands from other studies were included in our estimates of reporting rates).…”

Section: Resultsmentioning

confidence: 99%

“…We originally hoped to treat species as a random effect, thereby allowing species‐specific estimates for all species providing data, but there have been relatively few multi‐species studies (Geis and Atwood , Martinson , Zimmerman et al , Garrettson et al ) and preliminary modeling efforts resulted in poor convergence. We therefore assessed potential species effects by contrasting ducks versus geese (Martinson , Martinson and McCann ), and by recognizing northern pintails ( Anas acuta ), canvasbacks ( Aythya valisineria ), and redheads ( Aythya americana ) as trophy ducks based on findings by Geis and Atwood (: table 4) and Martinson (: table 3).…”

Section: Methodsmentioning

confidence: 99%

“…A second method of estimating band reporting probabilities relies on data collected through the waterfowl harvest survey (Geis and Atwood ). Hunters selected for this survey answer questions about how many ducks or geese they harvested each year, and how many of those ducks or geese were banded, and from these data an estimate of the number of banded ducks or geese harvested in each year and region (

{\hat{H}}_{banded}

) can be obtained by treating the responding hunters as a random sample of all licensed hunters.…”

mentioning

confidence: 99%

“…Band reporting probabilities are estimated by dividing the number of bands ( n bands ) reported to the Bird Banding Laboratory (Laurel, MD, USA) by the estimated harvest of banded birds (

\overset{p}{true} = n_{italicbands} / {\overset{H}{true}}_{italicbanded}

). Geis and Atwood () observed a pronounced drop in estimated reporting probability during the 1957 hunting season when a question that asked hunters to list band numbers of birds that they had harvested was dropped from the harvest survey form; they speculated that hunters who failed to provide band numbers during earlier years may have refrained from reporting that they harvested ≥1 banded bird, thereby inflating estimates of band reporting probabilities. We suspect that harvest survey methods may overestimate band reporting probabilities because surveyed hunters may be reluctant to report that they harvested banded birds if they failed to report those bands to the Bird Banding Laboratory.…”

mentioning

confidence: 99%

“…Padding and Royle () refined Geis and Atwood's () survey‐based methodology using banded mallards and Canada geese ( Branta canadensis ) that had been reported through the Parts Collection Survey. By determining how many of these banded birds had also been reported to the Bird Banding Laboratory, they created a 2‐occasion closed‐population mark‐recapture dataset that allowed them to estimate detection probability (i.e., band reporting probability) for a known population of banded and harvested birds.…”

mentioning

confidence: 99%

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A Meta‐Analysis of Band Reporting Probabilities for North American Waterfowl

2019

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Knowledge of band reporting is important for converting band encounter data into estimates of harvest probabilities, which can then be used to assess harvest management goals or estimate population size and other vital rates. Historical estimates of band reporting probabilities have come from reward‐band studies or joint analysis of band recovery and harvest survey data, but there are long gaps between estimates, and most studies have focused exclusively on mallards (Anas platyrhynchos). We compiled 337 estimates of band reporting probabilities for North American waterfowl and conducted a Bayesian state‐space analysis to provide a continuous time series of estimated reporting probability from 1948 to 2010. Band reporting probability increased sharply between 1996 and 2000 when toll‐free phone numbers were added to band inscriptions and agencies implemented electronic methods for band reporting, but our analysis also identified gradual long‐term trends in reporting probability throughout the time series. We found little evidence for among‐species variation in reporting probability, but a few species that are widely regarded as trophies by waterfowl hunters (canvasbacks [Aythya valisineria], redheads [Aythya americana], and northern pintails [Anas acuta]) had higher historical reporting probabilities than mallards. We also found little evidence of geographic variation in reporting probabilities, although we confirmed lower reporting probabilities for eastern Canada. We recommend using our estimates of band reporting probabilities and their variances as informed priors in future analyses of band recovery data to fully embrace uncertainty about how this parameter affects estimates of other population parameters. Retrospective studies using parts collection data are needed to explore potential among‐species variation in reporting probabilities during recent decades. © 2019 The Wildlife Society.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

{\hat{H}}_{banded}

) can be obtained by treating the responding hunters as a random sample of all licensed hunters.…”

mentioning

confidence: 99%

“…Band reporting probabilities are estimated by dividing the number of bands ( n bands ) reported to the Bird Banding Laboratory (Laurel, MD, USA) by the estimated harvest of banded birds (

\overset{p}{true} = n_{italicbands} / {\overset{H}{true}}_{italicbanded}

mentioning

confidence: 99%

mentioning

confidence: 99%

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A Meta‐Analysis of Band Reporting Probabilities for North American Waterfowl

2019

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Changes in ring recovery rates over the last 50 years: shall we continue to ring ducks?

et al. 2010

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Although knowledge of ring recovery rate is of crucial importance to establish demographic parameters, such as survival probability, this information is generally unknown for the dabbling ducks. The almost single existing value from the North American Mallard (Anas platyrhynchos) is thus generally applied to other species or geographic areas, even though this assumption may be strongly misleading. In the study reported here, we have relied on a proxy for actual ring recovery rate, namely, the proportion of rings fitted each year that were eventually reported, to test for differences between duck species (Mallard and Teal Anas crecca) and between countries [England (UK) and France] for Teal. Potential trends over time were also assessed. Ring recovery rate was found to have sharply decreased and at a similar rate over time in both species in France, and in both countries for Teal (e.g. from 22.7% in 1952 to 7.2% in 1992 for the British Teal). Teal rings were, however, reported more frequently than Mallard ones, and Teal rings were more frequently reported in the UK than in France. In recent years, a phone number for reporting the information has been included on the bird mark, with the immediate result of a doubling in the recovery rate in France. Adaptations to current ringing procedures that would improve ring reporting would appear to be necessary in the future if researchers are to keep ringing as a valuable source of information for bird demography studies.

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Wildlife Demography

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Proportion of Recovered Waterfowl Bands Reported

Cited by 11 publications

References 1 publication

A Meta‐Analysis of Band Reporting Probabilities for North American Waterfowl

A Meta‐Analysis of Band Reporting Probabilities for North American Waterfowl

Changes in ring recovery rates over the last 50 years: shall we continue to ring ducks?

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