
TY  - JOUR
A1  - Davis, LS 
A1  - Mccaffrey, FT 
T1  - Recognition and Parental Investment in Ad&#233;lie Penguins
JF  - Emu
JO  - EMU
Y1  - 1989
VL  - 89
IS  - 3
SP  - 155
EP  - 158
KW  - 
UR  - https://doi.org/10.1071/MU9890155 
N2  - Discrimination abilities of Ad&#233;lie Penguins Pygoscelis adeliae were studied by cross-fostering eggs within two days of laying, chicks within five days of hatching, chicks 11-15 days of age and chicks 17-21 days of age. Our results show that Ad&#233;lie Penguins have no innate mechanism for recognition of offspring. Discrimination by adults was apparent only after 17-21 days of post-hatching familiarity, which corresponded with the end of the guard stage. By contrast, chicks may have learnt to discriminate adults by 11-15 days of age. During the guard stage, within-brood food allocation by parents was determined by sibling competition. 
ER  -

