Escape behaviour of feral horses during a helicopter count

Animal escape behaviour in response to aircraft could influence the accuracy and precision of aerial estimates of population size but is rarely investigated. Using independent observers on the ground and in the air, we recorded the behaviour of 17 groups,

Author W. L. Linklater and E. Z. Cameron
Year 2002
Secondary title Wildlife Research
Volume 29
Number 2
Pages 221-224
Links https://www.publish.csiro.au/nid/144.htm