TY - JOUR
T1 - Sexing adult Cory's Shearwater by discriminant analysis of body measurements on Linosa Island (Sicilian Channel), Italy
AU - Lo Valvo, Mario
PY - 2001
Y1 - 2001
N2 - Males and females of many avian species may show no plumage dimorphism, but often can be sexed by differences in body measurements. Sex determination of many Cory's Shearwaters Calonetris diomedea, was possible by multiplying bill length by bill depth. In this study, discriminant analysis of six measurements (bill length, bill depth, wing, tail, tarsus and mass) was performed on Cory's Shearwaters breeding on Linosa Island (Sicilian Channel), Italy and the efficiency of sex determination was compared with the univariate method. Results show the advantages of the discriminant functions. Bill depth is the best parameter (up to 92% correct classification), followed by mass (84% correct classification); using mass is simple and causes less disturbance to the birds. Received 10 August 2000, accepted 2 February 2001.
AB - Males and females of many avian species may show no plumage dimorphism, but often can be sexed by differences in body measurements. Sex determination of many Cory's Shearwaters Calonetris diomedea, was possible by multiplying bill length by bill depth. In this study, discriminant analysis of six measurements (bill length, bill depth, wing, tail, tarsus and mass) was performed on Cory's Shearwaters breeding on Linosa Island (Sicilian Channel), Italy and the efficiency of sex determination was compared with the univariate method. Results show the advantages of the discriminant functions. Bill depth is the best parameter (up to 92% correct classification), followed by mass (84% correct classification); using mass is simple and causes less disturbance to the birds. Received 10 August 2000, accepted 2 February 2001.
KW - Animal Science and Zoology
KW - Calonectris diomedea
KW - Cory's Shearwater
KW - Discriminant analysis
KW - Sicily
KW - Animal Science and Zoology
KW - Calonectris diomedea
KW - Cory's Shearwater
KW - Discriminant analysis
KW - Sicily
UR - http://hdl.handle.net/10447/206104
M3 - Article
VL - 24
SP - 169
EP - 174
JO - Waterbirds
JF - Waterbirds
SN - 1524-4695
ER -