New Zealand pigeon

Description

The New Zealand pigeon or kererū (Hemiphaga novaeseelandiae) is a bird endemic to New Zealand.Māori call it kererū in most of the country but kūkupa and kūkū in some parts of the North Island,particularly in Northland.Commonly called wood pigeon,they are distinct from the wood pigeon (Columba palumbus) of the Northern Hemisphere,which is a member of a different genus.The New Zealand pigeon is a large,550–850 grams (19–30 oz),arboreal fruit-pigeon found in forests from Northland to Stewart Island/Rakiura,ranging in habitats from coastal to montane.The general morphology is that of a typical pigeon,in that it has a relatively small head,a straight soft-based bill and loosely attached feathers.It also displays typical pigeon behaviour,which includes drinking by suction,a wing-threat display,hitting with the wing when threatened,a diving display flight,a 'bowing' display,ritualised preening and 'billing' during courtship.New Zealand pigeons build flimsy,shallow,twiggy nests and feed crop milk to hatchlings.The mainland New Zealand pigeon grows to some 51 centimetres (20 in) in length and 650 grams (23 oz) in weight,compared to 55 centimetres (22 in) and 800 grams (28 oz) for the Chatham Island variant.The head,throat and wings are generally a shiny green-purple colour,but with a bronze tinge to the feathers.The breast is typically white and the bill red with an orange-ish tip.The feet and eyes are red.Juveniles have a similar colouration but are generally paler with dull colours for the beak,eyes and feet and a shorter tail.The New Zealand pigeons make occasional soft coo sounds (hence the onomatopoeic names),and their wings make a very distinctive "whooshing" sound as they fly.The bird's flight is also very distinctive.[citation needed] Birds will often ascend slowly before making impressively steep parabolic dives;it is thought that this behaviour is often associated with nesting,or nest failure.