2007
DOI: 10.1093/auk/124.1.96
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Incorporating Availability for Detection in Estimates of Bird Abundance

Abstract: Several bird-survey methods have been proposed that provide an estimated detection probability so that bird-count statistics can be used to estimate bird abundance. However, some of these estimators adjust counts of birds observed by the probability that a bird is detected and assume that all birds are available to be detected at the time of the survey. We marked male Henslow's Sparrows (Ammodramus henslowii) and Grasshopper Sparrows (A. savannarum) and monitored their behavior during May-July 2002 and 2003 to… Show more

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Cited by 60 publications
(56 citation statements)
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“…, Diefenbach et al. ). In addition, the quality of information gained from each method was similar to that reported in other studies.…”
Section: Discussionmentioning
confidence: 99%
“…, Diefenbach et al. ). In addition, the quality of information gained from each method was similar to that reported in other studies.…”
Section: Discussionmentioning
confidence: 99%
“…Additionally, variation in availability for detection (Diefenbach et al 2007) was modeled as a function of the observation time of day and day of year. Additionally, variation in availability for detection (Diefenbach et al 2007) was modeled as a function of the observation time of day and day of year.…”
Section: Data Used In Examplesmentioning
confidence: 99%
“…However, much biodiversity monitoring has been performed by expert humans, who typically rely on auditory cues to detect and classify bird species, because replicating and automating humans’ abilities have proven very challenging to the extent that automated systems cannot routinely replace humans in conducting biodiversity surveys for birds. Yet, a number of factors constrain human monitoring, including variability in observer skills in detection and classification [1–3], temporal mismatches in observer effort and biological phenomena [4, 5], and spatial mismatches in observer coverage and biological distributions [6, 7]. …”
Section: Introductionmentioning
confidence: 99%