The Kokako (Callaeas cinerea) is an endangered, forest-dependent bird belonging to the endemic New Zealand family Callaeidae, the New Zealand wattlebirds. Two subspecies of Kokako are recognised: the now extinct orange-wattled South Island Kokako (SI Kokako) and the blue-wattled North ...
New Zealand's endemic, duetting kokako ( Callaeas cinerea wilsoni ) produce one of the longest known bird songs (ca 30s) and duets that differ strikingly from those of most duetters in their unusual length and non-repetitive structure, long pauses between component phrases, and the great ...
Diet overlap between kokako and the common brushtail possum in central North Island - Fitzgerald - 1984 () Citation Context ...nnan et al., 1996), while others have suggested that forest bird populations may have declined as a consequence of possum-induced forest modification and ...
How, then, could receivers detect whether song comes from a pair or an unpaired bird, and what would be the competitive advantage of duetting if two birds were not necessary to produce full song? We investigated whether an antiphonally duetting species, the kokako, Callaeas cinereus wilsoni ...