Chatham Island Taiko Pterodroma magentae management and research, 1987-1993 : predator control, productivity and breeding biology
|Title||Chatham Island Taiko Pterodroma magentae management and research, 1987-1993 : predator control, productivity and breeding biology|
|Publication Type||Journal Article|
|Year of Publication||1994|
|Authors||Imber, MJ, Taylor, GA, Grant, AD, Munn, A|
|Type of Article||paper|
Since the first burrows of Chatham Island Taiko Pterodroma magentae were found in 1987/88, trapping around the burrows has killed 204 feral cats Felis cattus, 3053 Possums Trichosurus vulpecula, 1572 Weka Gallirallus australis and 589 rats Rattus spp. in 109,892 trap-nights to March 1993. No Taiko are known to have been killed by predators. Productivity was static at one fledgling per year until 1992/93, when two fledglings were reared. Unobtrusive studies of breeding biology indicated that mating occurred about 1 October, laying about 26 November, hatching about 20 January and fledglings departed about 4 May. The pre-laying exodus of females lasted up to 50 + days and chick-rearing took about 105 days.