The height of approaching humans does not affect flight-initiation distance
Wouter FD Van Dongen, Emily M McLeod, Raoul A Mulder, Michael A Weston, Patrick-Jean Guay
BIRD STUDY | TAYLOR & FRANCIS LTD | Published : 2015
Capsule: Responses of animals to anthropogenic disturbances are often quantified using flight-initiation distance, the distance at which an animal flees a stimulus such as a person. We showed that the height of 20 researchers, selected to represent a diversity of heights, did not affect estimates of flight-initiation distance of Black Swans Cygnus atratus, suggesting that the height of humans used to test hypotheses of flight-initiation distances is not a confounding variable.