DOI:  10.1098/rspb.2005.3289  Nestling testosterone is associated with begging behaviour and fledging success in the pied flycatcher, Ficedula hypoleuca
Author: Goodship, N. M.  v. 273  no. 1582, pp. 71- 76
ISSN:  0962-8452  EISSN:  1471-2954 
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