Observer variation in estimates of Meadow Pipit <i>Anthus pratensis</i> and Skylark <i>Alauda arvensis</i> abundance on moorland. Buchanan, G., Pearce-Higgins, J., & Grant, M. Bird Study, 53(1):92–95, RSPB, The Lodge, Sandy, Bedfordshire SG19 2DL, 2006.
abstract   bibtex   
Capsule Counts least susceptible to observer effects were those within 25 m of a transect and the total number along a transect, with observer effects greater for distance sampling. © 2006 British Trust for Ornithology.
@ARTICLE{Buchanan2006,
  author = {Buchanan, G.M. and Pearce-Higgins, J.W. and Grant, M.C.},
  title = {Observer variation in estimates of Meadow Pipit \textit{Anthus pratensis}
	and Skylark \textit{Alauda arvensis} abundance on moorland},
  journal = {Bird Study},
  year = {2006},
  volume = {53},
  pages = {92--95},
  number = {1},
  abstract = {Capsule Counts least susceptible to observer effects were those within
	25 m of a transect and the total number along a transect, with observer
	effects greater for distance sampling. © 2006 British Trust for Ornithology.},
  address = {RSPB, The Lodge, Sandy, Bedfordshire SG19 2DL},
  owner = {eric},
  subdatabase = {distance},
  timestamp = {2006.11.22}
}

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