Food-associated calls of tufted capuchin monkeys (Cebus apella nigritus) are functionally referential signals Di Bitetti, M. 565
Is quantity of song type use in adult birds related to singing during development? Geberzahn, N. 593
Heterosexual signalling by the lizard Anolis carolinensis, with intersexual comparisons across contexts Orrell, K. &Jenssen, T. 603
Wolf pack territory marking in the Bia owieża primeval forest (Poland) Zub, K.,Theuerkauf, J.,Jedrzejewski, W.,Jedrzejewska, B.,Schmidt, K. &Kowalczyk, R. 635
The influence of androgenic gland implantation on the agonistic behavior of female crayfish (Cherax quadricarinatus) in interactions with males Karplus, I.,Sagi, A.,Khalaila, I. &Barki, A. 649
Male dominance and female chemosensory preferences in the rock-dwelling snow vole Luque-Larena, J.,López, P. &Gosálbez, J. 665
Urinary testosterone metabolite levels in bonobos: A comparison with chimpanzees in relation to social system Sannen, A.,Heistermann, M.,van Elsacker, L.,Möhle, U. &Eens, M. 683