For these reasons the species is evaluated as Least Concern. Features: At 10cm long and only around 16g to 20g, it is one of our smaller birds.It is dull green on top and grey-brown below, with yellow flanks. It nests regularly in the Lake McConaughy area, Keith Co, although cedar encroachment in recent years has reduced the population (Brown et al 2012). The information was revealed on 23 September 2013. Like the Bewick’s Wren, the tan breasted, brown feathered Carolina Wren sports a white stripe across the eye. Endangered rock wren populations will benefit greatly from an increased use of 1080.” So the verdict from this research project is strongly in favour of aerial 1080 operations, at least as far as rock wren populations are concerned. Immediately after the poison operation, 30 of the rock wren population were sighted by the staff monitoring the site. Rock wren heroine Megan Willans wanted to build on earlier work by Sue Heath and discover basic facts on what was happening to rock wren on the mainland, and get clues on how to protect them. Rock wren constitute a widespread, naturally fragmented population, occurring in patches of suitable habitat over c . 900 m in altitude throughout the length of the South Island, New Zealand. They are poor fliers, rarely flying more than two metres off the ground or for distances more than 30 metres. Today, there are just two – the rifleman and the rock wren. First up, Megan and her team developed (2005-7) population survey techniques in the McKenzie burn area, which had been studied by Sue Heath in 1984-5. Rock Wrens, one of the oldest as well as the most distinct songbird species made a comeback from extinction because of the New Zealand’s Department of Conservation (DOC) project. The resighting of banded rock wren has revealed a female at least 6 years old. The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). The resighting of banded rock wren has revealed a female at least 6 years old. Estimates of the long-term effective population size of rock wren are dramatically larger relative to contemporary estimates, indicating that in the past, rock wren sustained a much higher abundance than today. The population is small and declining, as its habitat of alpine basins and habit of hole-nesting on the ground leads to predation by mice and stoats. There’s still much to learn, however. The New Zealand rock wren is specialised for the alpine environment, in areas of low scrub and scree from 900 m up to 2,400 m. Contrary to its other common name (the South Island wren), fossil evidence shows it was more widespread in the past and once lived in the North Island. Designation of Northern and Southern rock wren lineages as separate evolutionarily significant units (ESUs) is proposed. A large snowfall then made the site inaccessible for two weeks. Once winter snows arrive, they survive in pockets of space in their rock or scrub shelter. In Lincoln Co and probably southwest Dawson Co, Rock Wrens are common in cedar canyons, utilizing dirt road cuts; 12-15 were in cedar canyons in Lincoln Co 15 Jul 2008. It was difficult to obtain consistent counts of rock wren, nevertheless, the population appears to have varied from a high of 29 in 1986 to a low of 10 in 2004-05 with a spectacular recovery to 23 in 2005-06. the rock wren population began in 2000. Only one New Zealand once had six species of the wren. Most of the population resides year round in one location, making them common visitors to back yard feeders. The rock wren (Xenicus gilviventris) is a threatened alpine passerine belonging to the endemic New Zealand wren family (Acanthisittidae). Conservation status: The rock wren (piwauwau or tuke) is endemic and classified as nationally endangered. South Carolina designated the Carolina Wren as its official state bird. It was difficult to obtain consistent counts of rock wren, nevertheless, the population appears to have varied from a high of 29 in 1986 to a low of 10 in 2004-05 with a spectacular recovery to 23 in 2005-06.
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