
TY  - JOUR
A1  - Briggs, SV 
T1  - Morphological Prediction of Body Condition in Maned Ducks
JF  - Wildlife Research
JO  - Wildl. Res.
Y1  - 1989
VL  - 16
IS  - 6
SP  - 605
EP  - 609
KW  - 
UR  - https://doi.org/10.1071/WR9890605 
N2  - Best-fit regression equations for estimating body-fat levels from morphological measurements of maned ducks (Chenonetta jubata) were developed. The cube of [body weight/(sternum x tarsus x bill length)] plus the square of skinfold thickness was the best predictor of body fat in females (r*2=0.81). The cube of (body weight x skinfold thickness) was the best predictor in males (r*2=0.75). These regression equations accurately estimated fat level in all seasons except females in winter, when estimated values were significantly higher (paired t test, P<0.02) by 18% than actual levels. Body weight alone predicted protein content well in males (r*2=0.81) and less well in females (r*2= 0.61). These equations enable long-term and relatively cheap monitoring of body condition in trapped maned ducks. 
ER  -

