@article{articlee32c0751,
title   = {Preliminary observations of tool use in captive hyacinth macaws (Anodorhynchus hyacinthinus)},
author = {Borsari, Andressa and Ottoni, Eduardo Benedicto},
year = {2005},
doi = {10.1007/s10071-004-0221-3},
journal   = {Animal Cognition}
}