Date of moulting, morphometric measurements and feather growth rate for 5 species of seaducks.

Mean shedding day of old 9th primary ± SD, body mass (g) ± SD, final 9th primary length (mm) ± SD, delta 9th primary growth rate (mm.day−1) ± SD and maximal 9th primary growth rate (mm.day−1) ± SD for 5 seaduck species (HADU, LTDU, SUSC, WWSC, and COEI). Species with the same letter are not significantly different and species with different letters are significantly different. Statistical results for delta 9th primary growth rate (mm.day−1): Anova, F4,56 = 50.388, ppppp = 0.021, respectively for HADU vs. LTDU, HADU vs. WWSC, HADU vs. COEI and HADU vs. SUSC, with p = 0.369 for LTDU vs. WWSC and p = 0.268 for COEI vs. SUSC; for maximal 9th primary growth rate: Anova, F4,56 = 50.289, ppppp = 0.016, respectively for LTDU vs. HADU, LTDU vs. SUSC, LTDU vs. COEI, LTDU vs. WWSC and ppp = 0.001, respectively for HADU vs. WWSC, HADU vs. COEI and HADU vs. SUSC and with p = 0.323, p = 0.154 and pDate of moulting, morphometric measurements and feather growth rate for 5 species of seaducks.