Optimizing Repeat-Visit, Call-Broadcast Nocturnal Surveys for Yellow Rails (Coturnicops noveboracensis)

dc.contributor.authorMartin, Kristen
dc.contributor.authorKoper, Nicola
dc.contributor.authorBazin, Ron
dc.date.accessioned2019-06-05T17:22:57Z
dc.date.available2019-06-05T17:22:57Z
dc.date.issued2014
dc.date.submitted2019-06-05T14:22:45Zen
dc.description.abstractDue to its secretive nature and nocturnal vocalization, multi-species bird monitoring programs are not effective in surveying populations of Yellow Rails (Coturnicops noveboracensis) and, thus, species-specific survey methods should be used. To determine how to optimize nocturnal call-playback surveys of Yellow Rails, we evaluated the effects of survey methods (naïve-estimated vs. detectability-adjusted estimated occupancy, observer, number of surveys, and the use of playbacks) and temporal and environmental conditions (e.g., time, date, temperature, moon phase, seasonality, and cloud cover) on detection probability. In 2010 and 2011, 334 call-broadcast night surveys for Yellow Rail were conducted at 167 survey points within 80 wetlands in south-central Manitoba, Canada. Yellow Rail detection probability was estimated at 0.63 in both years. In 2010, the detectability-adjusted wetland occupancy rate was estimated at 0.63, and in 2011 it was estimated at 0.36. Call-broadcast surveys contributed relatively little to improving Yellow Rail detectability, but repeat surveys at each site increased the number of individuals detected. Detection probability was not correlated with the temporal or environmental variables we studied, or by observer. Surveys where call-broadcasts are not feasible, such as volunteer surveys, are still likely to result in good estimates of Yellow Rail abundances, if surveys are repeated within breeding seasons.en_US
dc.identifier.citation43. Martin, K., Koper, N., and Bazin, R. 2014. Optimizing Repeat-Visit, Call-Broadcast Nocturnal Surveys for Yellow Rails (Coturnicops noveboracensis). Waterbirds, 37: 68-78.en_US
dc.identifier.urihttp://hdl.handle.net/1993/33956
dc.language.isoengen_US
dc.publisherThe Waterbird Societyen_US
dc.rightsopen accessen_US
dc.subjectCoturnicops noveboracensis, double-observer, marsh bird surveys, occupancy models, Yellow Railen_US
dc.titleOptimizing Repeat-Visit, Call-Broadcast Nocturnal Surveys for Yellow Rails (Coturnicops noveboracensis)en_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Martin waterbirds 063.037.0109.pdf
Size:
234.33 KB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
2.24 KB
Format:
Item-specific license agreed to upon submission
Description: