@article{journal,
author = {Beroud, T. and Druais, J. and Bay, Y. and Ricci, J. C.},
title = {Visual counts, bioacoustics and RADAR: three methods to study waterfowl prenuptial migration in Southern France},
year = {2012},
volume = {35.2},
pages = {175--188},
journal = {Animal Biodiversity and Conservation},
keywords = {Prenuptial migration, Waterfowl, Counts, Bioacoustics, RADAR}
}