@article{article1a01722c,
title   = {Initial orientation of homing pigeons at the magnetic equator: compass mechanisms and the effect of applied magnets},
author = {Ranvaud, Ronald Dennis Paul Kenneth Clive and Schmidt-Koenig, K and Ganzhorn, J U and Kiepenheuer, J and Gasparotto, O C and Britto, Luiz Roberto Giorgetti de},
year = {1991},
journal   = {Journal of Experimental Biology}
}