The data are in the comma delimited file HAVO_2015_2016_BirdSurveyData.csv. Hawaiʻi Volcanoes National Park (HAVO) was surveyed for landbirds and landbird habitat from February through April 2015 and February through April 2016. This information provides the second datum in the time-series of Pacific Island Network (PACN) monitoring for long-term trends in landbird distribution, density, and abundance. Initial PACN surveys were conducted in 2010 and are repeated every five years. The entire survey area was comprised of eight tracts in forest, woodland, and shrub habitat, totaling 26,364 ha. Each tract was surveyed using point-transect distance sampling to calculate estimates of bird abundance and density. In addition to the permanent PACN survey transects, randomly generated point-transects were also surveyed, allowing for a split panel sampling design. A total of 14,061 bird detections of twenty-eight species were recorded during point counts; 8 species were native to Hawaiʻi and 20 species were non-native.

The data are in the comma delimited file HAVO_2015_2016_BirdSurveyData.csv. Hawaiʻi Volcanoes National Park (HAVO) was surveyed for landbirds and landbird habitat from February through April 2015 and February through April 2016. This information provides the second datum in the time-series of Pacific Island Network (PACN) monitoring for long-term trends in landbird distribution, density, and abundance. Initial PACN surveys were conducted in 2010 and are repeated every five years. The entire survey area was comprised of eight tracts in forest, woodland, and shrub habitat, totaling 26,364 ha. Each tract was surveyed using point-transect distance sampling to calculate estimates of bird abundance and density. In addition to the permanent PACN survey transects, randomly generated point-transects were also surveyed, allowing for a split panel sampling design. A total of 14,061 bird detections of twenty-eight species were recorded during point counts; 8 species were native to Hawaiʻi and 20 species were non-native.

The data are in a tab delimited file titled HAVO_2015_2016_HabitatData.txt. Hawaiʻi Volcanoes National Park (HAVO) was surveyed for landbirds and landbird habitat from February through April 2015 and February through April 2016. This information provides the second datum in the time-series of Pacific Island Network (PACN) monitoring for long-term trends in landbird distribution, density, and abundance. Initial PACN surveys were conducted in 2010 and are repeated every five years. The entire survey area was comprised of eight tracts in forest, woodland, and shrub habitat, totaling 26,364 ha. Each tract was surveyed using point-transect distance sampling to calculate estimates of bird abundance and density. In addition to the permanent PACN survey transects, randomly generated point-transects were also surveyed, allowing for a split panel sampling design.

The data are in a tab delimited file titled HAVO_2015_2016_HabitatData.txt. Hawaiʻi Volcanoes National Park (HAVO) was surveyed for landbirds and landbird habitat from February through April 2015 and February through April 2016. This information provides the second datum in the time-series of Pacific Island Network (PACN) monitoring for long-term trends in landbird distribution, density, and abundance. Initial PACN surveys were conducted in 2010 and are repeated every five years. The entire survey area was comprised of eight tracts in forest, woodland, and shrub habitat, totaling 26,364 ha. Each tract was surveyed using point-transect distance sampling to calculate estimates of bird abundance and density. In addition to the permanent PACN survey transects, randomly generated point-transects were also surveyed, allowing for a split panel sampling design.

Bird surveys were conducted in March 2005 along shorelines in and adjacent to Hawaii Volcanoes National Park . Variables recorded at the start and end of each survey included time, GPS location, observer initials, temperature in Fahrenheit, cloud cover estimated to the nearest five percent, wind speed according to the Beaufort Wind Scale, and precipitation according to a five-point scale (no precipitation, mist or fog, drizzle, light rain, and heavy rain). Each bird recorded was accompanied with the GPS location of the bird, or GPS location of the observer with distance and bearing to the bird. Habitat type at the birds's location was also recorded using 21 habitat classifications. GPS location was documented usintga Garmin 12 CX and using the Universal Transverse Mercator, North American Datum 1983, 5Q.

The Kahuku Unit of the Hawai`i Volcanoes National Park (HAVO) was surveyed for native and non-native birds from January to September of 2005. Bird habitat comprised of forest, woodland, and grassland was divided into five separate regions, and these were surveyed with variable circular plot count methodology to generate estimates of abundance and occurrence. Sampling coverage was more intensive (i.e. several times more count transects and stations) than in past surveys, for more accurate estimates of range and population size. In addition to point counts, we recorded incidental observations to supplement the survey. The database contains detection data from the inventory for all bird species except the three endangered species (Hawaii Akepa, Hawaii Creeper, and Akiapolaau). Also included are the GIS shapefiles of the transects that were surveyed for the inventory.

Four parks in the Pacific Island Network were surveyed to monitor long-term trends in landbird composition, distribution, density, and abundance. Hawaiʻi Volcanoes National Park (HAVO) was surveyed in 2010, 2015-2016, 2019-2021, and 2024; the National Park of American Samoa (NPSA) in 2011, 2018, and 2023; and Haleakalā National Park (HALE) in 2012, 2017, and 2022. Surveys began in 2021 at Kalaupapa National Historical Park (KALA) and neighboring lands managed by the Hawaiʻi Department of Land and Natural Resources and The Nature Conservancy. Surveys in HAVO also included some adjacent state and private conservation lands and thus results provide broad spatial coverage of species detected. Using point-transect distance sampling, the surveys provide indices of relative abundance and occurrence. The dominant canopy species composition, canopy height and cover, and dominant understory species composition are also recorded at each survey station. Estimates of landbird population density and abundance are assessed in a trend analysis and published in the NPS Science Report Series or scientific journal. Alongside permanent survey transects from past surveys, randomly generated point-transects were included, creating a split-panel sampling design. This dataset includes the results from these landbird and habitat surveys.

This data describes the bird community in the lowland region of Hawaii Volcanoes National Park. Birds were surveyed using the line transect method, which includes measuring species, distance to bird, angle to bird, angle to trail, coordinates of beginning and end of trail and of each observation.

This data release contains the point-transect distance sampling records of forest bird survey collected in the Kohala Mountain complex in 2017, including survey point IDs, distance to detected birds, sampling conditions, ohia phenology, habitat classifications and background noise levels. This data release consists of one tabular dataset.

This data release contains the point-transect distance sampling records of forest bird survey collected in the Kohala Mountain complex in 2017, including survey point IDs, distance to detected birds, sampling conditions, ohia phenology, habitat classifications and background noise levels. This data release consists of one tabular dataset.