@article {4438, title = {The movements of juvenile and immature variable oystercatchers (Haematopus unicolor) from the Kaikoura Peninsula, South Island, New Zealand}, journal = {Notornis}, volume = {66}, year = {2019}, pages = {23-30}, type = {Full article}, abstract = {

Variable oystercatcher chicks (Haematopus unicolor) were banded at the Kaikoura Peninsula between summer 1999{\textendash}2000 and summer 2016{\textendash}2017. Prior to colour banding, there were no reports of Kaikoura Peninsula oystercatchers being sighted at other locations. Since summer 2006{\textendash}2007 colour banding sequences have been available and these unique identifiers enabled movements of individual juvenile and immature birds to be determined. Forty-two colour banded chicks fledged, and 25 of these have been sighted at 11 locations between Collingwood 215 km to the northwest, and the Avon-Heathcote Estuary near Christchurch, 145 km south. Twelve of the 25 birds sighted away have not been seen back at the Kaikoura Peninsula, the other 13 returned of which 4 travelled away for a second time and did not return. Seventeen birds were not seen away from the Kaikoura Peninsula but 7 with no sightings for periods over 7 months may been away and returned. Siblings often went to different locations. Of 9 pairs of same nest siblings, 1 pair stayed at the Kaikoura Peninsula, 1 pair went initially to Nelson and 1 pair to the Avon-Heathcote Estuary, and birds of the other 6 pairs went to different locations including staying at Kaikoura. Birds seen at Nelson were also seen at the Avon-Heathcote Estuary.

}, keywords = {dispersal, Haematopus unicolor, Kaikoura Peninsula, recoveries, sightings, variable oystercatcher}, attachments = {http://notornis.osnz.org.nz/subscribe}, author = {Lindsay K. Rowe} } @article {4429, title = {An estimate of the Hutton{\textquoteright}s shearwater (Puffinus huttoni) population in the Kaikoura region using colour-marking in 2002 and 2014}, journal = {Notornis}, volume = {65}, year = {2018}, pages = {196-201}, type = {Full article}, abstract = {

In September 2002 and 2014 respectively, 2,077 and 1,704 prospecting Hutton{\textquoteright}s shearwaters were colourmarked on the ventral plumage at their breeding grounds at Kowhai River, Seaward Kaikoura Ranges, New Zealand. Large numbers (425,516 in 2002, and 106,900 in 2014) of marked and unmarked birds were then counted from small boats off the Kaikoura coast between Haumuri Bluff and Ohau Point. A hypergeometric sampling model was fitted these counts, leading to population estimates of N =̂ 459,290 (95\% CI = 434,306-484,733) birds in 2002 and N ̂ = 590,407 (95\% CI = 543,992{\textendash}642,697) individuals in 2014. These estimates include both breeding and non-breeding birds and indicate that between 2002 and 2014 the population trend was about +2\% per year.

}, keywords = {Hutton{\textquoteright}s shearwater, mark-recapture, population estimates, Puffinus huttoni}, attachments = {http://notornis.osnz.org.nz/subscribe}, author = {Lindsay K. Rowe and R. Paul Scofield and Graeme A. Taylor and Richard J. Barker} } @article {4396, title = {Investigation of fallout events in Hutton{\textquoteright}s shearwaters (Puffinus huttoni) associated with artificial lighting}, journal = {Notornis}, volume = {64}, year = {2017}, pages = {181-191}, type = {Full article}, abstract = {

The risk of disorientation by artificial lights and subsequent {\textquoteleft}fallout{\textquoteright} has become a widely recognised issue for nocturnal procellariiform species. Using data from community-based rescue campaigns and systematic research, we assessed the characteristics of fallout events observed in fledglings of the threatened New Zealand endemic Hutton{\textquoteright}s shearwater (Puffinus huttoni) or Kaikoura titi. Despite strong annual variation in observed fallout numbers, the proportion of annually produced fledglings collected as {\textquoteleft}fallout birds{\textquoteright} remained below 1\% each year. Among those, more than 80\% survived due to community rescue efforts. Fallout was found to increase significantly during new moon, while weather effects remained inconclusive. Most fallout occurred within brightly lit areas of Kaikoura township, particularly along its coastal roads. High light source densities and high wattage lights appeared to be influential in some areas but could only partly explain the spatial distribution of fallout at this small scale.

}, keywords = {artificial light, disorientation, Hutton{\textquoteright}s shearwater, Kaikoura, moon phase, mortality, population impacts, Puffinus huttoni, weather effects}, attachments = {http://notornis.osnz.org.nz/system/files/Deppe_etal_2017.pdf}, author = {Lorna Deppe and Olivia Rowley and Lindsay K. Rowe and Nola Shi and Nicky McArthur and Oliver Gooday and Sharyn J. Goldstien} } @article {4201, title = {Dispersal of southern black-backed gulls (Larus dominicanus dominicanus) banded in Canterbury, New Zealand, 1959-1993}, journal = {Notornis}, volume = {60}, year = {2013}, pages = {134-142}, type = {Full article}, abstract = {A total of 3455 southern black-backed gull (Larus dominicanus dominicanus) chicks were banded at 4 Canterbury localities between 1959 and 1993: Ashley River 1239; Waimakariri River 219; Motunau Island 1997. Only 180 (5.2\%) of these chicks were recovered, 3.0\% of the river colony chicks and 6.9\% of the Motunau Island chicks. Three-quarters of recoveries were in rural environments with most others on the coast; 14 had been shot or trapped and killed. The oldest recovery from the river colonies was 6.1 years old but this may be an underestimate due to wear and loss of aluminium bands used early in the study period; Motunau Island birds were found up to 25.7 years after banding. Birds dispersed widely from the Wairarapa to Southland travelling up to 486 km. Recoveries of first year birds off-colony averaged 96 km which is more than the older birds, 54 km; 7/10 birds that travelled over 200 km were first year birds. On average, Motunau Island birds were found further from the natal colony than birds from the river colonies. My results indicate that dispersal distances and direction of black-backed gulls are variable, and that dispersal can occur between the North and South Islands.}, keywords = {Ashley River, banding, dispersal, Larus dominicanus dominicanus, Motunau Island, recoveries, Southern Black-backed Gull, Waimakariri River}, attachments = {http://notornis.osnz.org.nz/system/files/Rowe\%202013.pdf}, author = {Lindsay K. Rowe} } @article {4234, title = {Giant petrel (Macronectes halli) predation on red-billed gulls (Larus novaehollandiae) and white-fronted terns (Sterna striata) at Kaikoura}, journal = {Notornis}, volume = {60}, year = {2013}, pages = {307-308}, type = {Short Note}, keywords = {Kaikoura, Larus novaehollandiae, Macronectes halli, predation, Sterna striata}, attachments = {http://notornis.osnz.org.nz/system/files/Mills\%20et\%20al.\%202013.pdf}, author = {James A. Mills and Lindsay K. Rowe and Christopher J.R. Robertson and Mike Morrisey and Deborah A. Mills} }