Related references
Note: Only part of the references are listed.
Article
Ornithology
Detection probability of nests of Squacco Herons in southern France
C Barbraud et al.
JOURNAL OF FIELD ORNITHOLOGY (2004)
Article
Ornithology
Accuracy and variation in estimates of large numbers of birds by individual observers using an aerial survey simulator
PC Frederick et al.
JOURNAL OF FIELD ORNITHOLOGY (2003)