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Behavioral development in the red‐crowned crane ( Grus japonensis )
Author(s) -
Horwich Robert H.
Publication year - 1987
Publication title -
zoo biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.5
H-Index - 54
eISSN - 1098-2361
pISSN - 0733-3188
DOI - 10.1002/zoo.1430060412
Subject(s) - biology , hatching , zoology , grus (genus) , ecology , habitat
A male and a female red‐crowned crane were observed on a weekly basis from hatching until 7 months of age. The levels for 12 classes of activity were averaged and displayed. Weekly weights and weight gains were also displayed. Developmental profiles are discussed. These include (1) cyclic profiles, (2) single developmental peaks, and (3) behaviors with a high initial level reducing to a later low level. The chicks seemed to display alternating passive and active periods. The cyclic nature of development is discussed in relation to similar cycles in other species of birds and mammals.