@article{journal,
author = {Geist, C. and Liso, J. and Libby, S. and Blumstein, D. T.},
title = {Does intruder group size and orientation affect flight initiation distance in birds?},
year = {2005},
volume = {28.1},
pages = {69--73},
journal = {Animal Biodiversity and Conservation},
keywords = {Flight initiation distance, Intruder group size, Intruder orientation, Human disturbance, Set-back distances}
}