Saddleback (bird) - Behaviour

Behaviour

The Saddleback is larger than other arboreal insectivorous birds in New Zealand forests, measuring up to 25 cm (10 in) in length and weighing up to 75 grams (somewhat larger than a Common Blackbird). They will tear pieces of bark from tree trunks to find insects beneath, which are then dispatched and consumed with their short, robust, and unusually strong beak, but they will also feed on the ground in leaf litter. Their diet is not strictly insectivorous in nature and they have been observed eating fruit and drinking nectar. Poor fliers like their close relative the kokako, saddlebacks mostly bound from branch to branch but can fly noisily over short distances. Territorial birds, saddlebacks display antagonistic behaviour in this regard on three levels of intensity, singing out at dawn to mark their territory, making threat displays, which can include head bobbing, tail fanning, and warbling displays (at the same time the wattles become dilated), and finally, when a direct challenge is made to a bird's territory, fights can occur in which combatants attempt to grapple with the wattles of their foe.

The birds are notoriously fearless and noisy, and would frequently enchant European naturalists in the 19th century with their behaviour. Saddlebacks will nest in epiphytes, tree fern crowns, or holes in tree trunks.

They have a tendency to nest near the ground, and their fledglings will also leave the nest to hop around in a typically noisy fashion on the ground while they build up strength in their wings.