Menzel Randolf, and Wessel Andreas: Foreword .................... 7
Hiepe Theodor: Address of Welcome .............................. 13
Wessel Andreas: Ethology in Space and Time - Berlin in the
Light ....................................................... 15
Tembrock Günter: Change of Concepts of Behaviour over the
Last 60 Years at Humboldt University Berlin ................. 29
ScXileidt Wolfgang M.: Communication: The Quest for
Understanding Behavioural Complexity ........................ 61
Kotrschal Kurt: The Quest for Understanding Social
Complexity .................................................. 77
Bateson Patrick, and Curley James: Developmental Approaches
to Behavioural Biology ...................................... 89
Macdonald David W.: From Ethology to Biodiversity: Case
Studies of Wildlife Conservation ........................... 111
Kummer Hans: Sources of Productive Questions: Experiences of
a Primatologist ............................................ 157
Zuberbühler Klaus: The Evolution of Surface and Deep
Structure in Primate Communication ......................... 169
Visalberghi Elisabetta, and Addessi Elsa: Selectivity in
Stone Tool Use by Wild Bearded Capuchin Monkeys - Field
Observations and Experimental Evidence ..................... 191
Savage-Rumbaugh E. Sue, and Fields William M.: Human
Uniqueness - Constructions of Ourselves and Our Sibling
Species: Pan troglodytes and Pan paniscus .................. 205
Pepperberg Irene M.: Numerical Abilities of Grey Parrots:
Comparisons with Apes and Children ......................... 227
Schachner Adena: The Origins of Human and Avian Auditory-
Motor Entrainment .......................................... 243
Schiefenhövel Wulf: From Ethology to Human Ethology.
Cognitive Patterns in the Culture of the Eipo, Highlands
of West-New Guinea ......................................... 255
Klopfer Peter, Krystal Andrew D., Williams Cathy V.,
and Yoder Anne D.: Neuroethology: Do Hibernating Lemurs
Sleep? ..................................................... 271
Okanoya Kazuo: Song Complexity in Bengalese Finches:
Sexual Selection, Domestication, and Brain Plasticity ...... 281
Riede Tobias, and Brown Charles: Body Size, Vocal Fold
Length, and Fundamental Frequency - Implications for
Mammal Vocal Communication ................................. 295
Zahavi Amotz: On a General Theory Concerning the Special
Mechanism of Signal Selection and Its Interaction with
the Selection of All Other Traits .......................... 315
Hassenstein Bernhard: The Concepts of Operant Conditioning
and Conditioned Action in Past and Future .................. 321
Bhadra Anindita: The Story of Power in a Primitive Wasp
Society .................................................... 331
Menzel Randolf: Structure of Navigational Memory in an
Insect, the Honeybee ....................................... 351
Heinrich Bernd: Programmed Behaviour, Learning, and Knowing:
Caterpillars to Ravens ..................................... 369
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