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Grey-faced Petrel Project

Grey Faced Petrel Project
The Grey-faced Petrel Project was New Zealand’s longest running mainland seabird project [1990-2013]. About 500 birds use the colony at Mauao, spread around the base of the mountain under the skirts of the pohutukawa forest, with some burrows higher up to a maximum of c.75m above sea level. It is one of New Zealand’s most common seabirds, with vast colonies on Moutuhora (Whale Island) off Whakatane, and a large number on Motuotau (Rabbit Island) just offshore from Moturiki (Leisure Island). There are no Grey-faced Petrel burrows being used currently on Moturiki, but a few burrows of similar size have been found.

This 2015-born chick was one of 26 found this year on the Mauao Grey-faced Petrel colony

This 2015-born chick was one of 26 found this year on the Mauao Grey-faced Petrel colony

The Ornithological Society of New Zealand has collected data from Motuotau and Mauao in the past to see if the birds were maintaining their numbers.
It was proven that in fifty years time, without pest control, the numbers birds using the Mauao colony would be half the number they are now. In 200 years, there would be no birds. Current pest control methods are maintaining the numbers of birds.

2015 adult Grey-faced Petrel on Mauao

2015 adult Grey-faced Petrel on Mauao

If you would like to visit the colonies, a few trips per season are undertaken. Contact Paul Cuming on 0274658710 or birdo@post.com to arrange a visit. These colonies are off limits to casual visitors, but if you happen to be at Mauao around the base track at night during April and May you can usually hear them, or if you have a torch, see them.
The life cycle of a Grey-faced Petrel:
April/May: Adults return to the colonies to establish pair bonds and territorial burrows
July/August: A single egg is laid in a burrow. If the egg is lost, no relaying occurs.
September/October: chicks hatch
December/January: chicks fledge

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