Griffin AS, Savani RS, Hausmanis K, Lefebvre LSeptember 2005Journal article Journal:Animal BehaviourVolume:70Issue:3, Elsevier, pp.507 - 515No abstract availableKeywords:3109 Zoology , 3103 Ecology , 31 Biological Sciences DOI10.1016/j.anbehav.2004.11.023