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Boxplots (description see Fig 1) of concentrations of glucocorticoid metabolites (GCM; ng/g droppings) of female Blue-fronted parrots (Amazona aestiva), kept under natural light variation (sunrise: 06:02 ± 0:11 a.m.—sunset: 06:09 ± 0:03 p.m.–mean ± standard deviation), after an injection of saline solution (0.9% NaCl; white boxes), dexamethasone (1 mg/Kg; white striped boxes) and adrenocorticotropic hormone (25 IU of ACTH; gray striped boxes).

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posted on 05.01.2016, 14:53 authored by João C. P. Ferreira, Caroline J. Fujihara, Erika Fruhvald, Eduardo Trevisol, Flavia C. Destro, Carlos R. Teixeira, José C. F. Pantoja, Elizabeth M. S. Schmidt, Rupert Palme

The control group was kept in the same room but remained undisturbed (gray boxes). Please note the different y-axis scale in the upper (Dexamethasone; ACTH) and lower (Saline; Control) panels. Asterisks beside the gray striped boxes indicate significant differences compared with the same interval of the control group (P < 0.01). The P values of time (T), treatments (Treat) and the interaction time*treatments (T*Treat) are shown.