Kookaburra Australian native bird. Nictitating membrane (3rd eyelid) on Laughing kookaburra. Dacelo novaeguineae

The laughing kookaburra is native to eastern mainland Australia, but has also been introduced to parts of New Zealand, Tasmania, and Western Australia.[5] It occupies dry eucalypt forest, woodland, city parks and gardens.[5] This species is sedentary and occupies the same territory throughout the year. It is monogamous, retaining the same partner for life. A breeding pair can be accompanied by up to five fully grown non-breeding offspring from previous years that help the parents defend their territory and raise their young.[5] The laughing kookaburra generally breeds in unlined tree holes or in excavated holes in arboreal termite nests.[5] The usual clutch is three white eggs. The parents and the helpers incubate the eggs and feed the chicks. The youngest of the three nestlings or chicks is often killed by the older siblings. When the chicks fledge they continue to be fed by the group for six to ten weeks until they are able to forage independently.[6]

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