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On Locomotory Movements in Birds and the Intention Movements Derived From Them

On Locomotory Movements in Birds and the Intention Movements Derived From Them ON LOCOMOTORY MOVEMENTS IN BIRDS AND THE INTENTION MOVEMENTS DERIVED FROM THEM by A. DAANJE (Eindhoven, Holland) (adapted from the original Dutch manuscript by N. TINBERGEN) (With 39 figures) (Rec. 2-V-1950) I INTRODUCTORY As all observers of animal behaviour know, many activities may occa- sionally be performed incompletely. This is especially true of locomotory movements. Walking, for instance, in a bird, may be seen in numerous degrees of intensity, arrangeable in a sliding scale from full intensity down to an almost imperceptible indication of it. HEINROTH seems to have been the first to have called attention to these low intensity movements; he called them "intention movements" because the trained behaviour student can derive from their study a knowledge of what the animal is intending to do in the next few moments. 49 It has become clear to me that intention movements are, at least in birds, of much more common occurrence than is usually realised, and that a better knowledge of them could promote our insight into the factors underlying behaviour to a considerable degree. In order to recognise intention move- ments however it is imperative that the full intensity of the corresponding movements should be well known. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Behaviour Brill

On Locomotory Movements in Birds and the Intention Movements Derived From Them

Daanje, A.
Behaviour , Volume 3 (1): 48 – Jan 1, 1951
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Publisher
Brill
Copyright
© 1951 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0005-7959
eISSN
1568-539X
DOI
10.1163/156853951X00214
Publisher site
See Article on Publisher Site

Abstract

ON LOCOMOTORY MOVEMENTS IN BIRDS AND THE INTENTION MOVEMENTS DERIVED FROM THEM by A. DAANJE (Eindhoven, Holland) (adapted from the original Dutch manuscript by N. TINBERGEN) (With 39 figures) (Rec. 2-V-1950) I INTRODUCTORY As all observers of animal behaviour know, many activities may occa- sionally be performed incompletely. This is especially true of locomotory movements. Walking, for instance, in a bird, may be seen in numerous degrees of intensity, arrangeable in a sliding scale from full intensity down to an almost imperceptible indication of it. HEINROTH seems to have been the first to have called attention to these low intensity movements; he called them "intention movements" because the trained behaviour student can derive from their study a knowledge of what the animal is intending to do in the next few moments. 49 It has become clear to me that intention movements are, at least in birds, of much more common occurrence than is usually realised, and that a better knowledge of them could promote our insight into the factors underlying behaviour to a considerable degree. In order to recognise intention move- ments however it is imperative that the full intensity of the corresponding movements should be well known.

Journal

Behaviour – Brill

Published: Jan 1, 1951

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