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Aspects of the biology of the Australasian harrier (Circus aeruginosus approximans Peale 1848) : a thesis presented for the degree of Master of Science by thesis only in Zoology at Massey University
(Massey University, 1978)
The study is based on 18 months intensive field-work during which 212 Australasian harriers were trapped, retrapped, measured, sexed, aged, individually marked and observed. Fortnightly observations of the individually ...