
TY  - JOUR
A1  - Freeman, Amanda N. D. 
T1  - Diet of Westland Petrels <emph type="2">Procellaria westlandica</emph>: the Importance of Fisheries Waste During Chick-rearing
JF  - Emu
JO  - EMU
Y1  - 2001
VL  - 98
IS  - 1
SP  - 36
EP  - 43
KW  - 
UR  - https://doi.org/10.1071/MU98005 
N2  - The diet of the Westland Petrel Procellaria westlandicawas studied during the chick-rearing period (August-&#8211;October) from1993&#8211;96. Fish occurred in 92% of samples and formed 78.8&#177; 6.5% by weight of the solid food brought back to thecolony. Cephalopods were found in 32% of samples and contributed 18.7&#177; 6.2% of solid food by weight. Crustacea occurred inonly 4% of samples and contributed only 2.4 &#177; 2.4%of solid food by weight. During the part of the chick-rearing period in whichthe Hoki Macruronus novaezelandiae fishery was operating(August to mid-September), fisheries waste accounted for 80% of thefish found in samples and formed around 63% of the total diet at thattime. After the Hoki season, fisheries waste accounted for only 31% ofthe fish found in samples, therefore contributing only around 25% ofthe total diet as birds switched to capturing more natural prey, or scavenged a wider variety of fish species, presumably from smaller, in-shore fishing vessels. 
ER  -

