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PARENT—YOUNG RECOGNITION IN THE COOT FULICA ATRA
Author(s) -
Alley Ronald,
Boyd Hugh
Publication year - 1950
Publication title -
ibis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.933
H-Index - 80
eISSN - 1474-919X
pISSN - 0019-1019
DOI - 10.1111/j.1474-919x.1950.tb01732.x
Subject(s) - brood , young adult , developmental psychology , psychology , alarm , zoology , demography , biology , ecology , sociology , materials science , composite material
Summary.1 Parent Coot treat all young conspicuously unlike their own as territorial intruders. 2 Parents with young less than two weeks old will tolerate, feed and brood young similar in appearance to their own. Three cases of permanent adoption are recorded. 3 Parents with young much over a fortnight old will not tolerate any strange chicks, however similar. This appears to prove that they recognize their own young individually. 4 The reactions of the young are controlled by releasers. Two are cited, viz. releasers of the following, and alarm, reactions. 5 Chicks up to at least eight hours old will follow men, accept food from (hem, and respond to calls made by them. 6 This tameness disappears by the second day (except in the case of hand‐reared young). Imprinting is by then complete. 7 At first young will follow and beg from any adult Coot. 8 At 8–11 days young learn to avoid adults in an attitude of attack. 9 Individual recognition of adults develops at about three weeks.