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Bird banding at 2 locations adjacent to one another (one in koa restoration forest, and other in native intact forest) at Hakalau Forest National Wildlife Refuge before and after the start of an outbreak by koa moths (Scotorythra paludicola) during 2013. Each bird was measured with an electronic scale accurate to 1/10th g. Results indicate that insectivorous birds increased in mass, on average, while generalist diet species showed marginally significant increases, and two out of three nectarivorous and frugivorous birds did not have significant change.
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Hawaii forest birds nesting in Hakalau Forest National Wildlife Refuge were exposed to models of predators near their nests to measure behavioral responses. Responses to potential nest predators included vocalization rate, movement behavior, and nestling feeding. Predators were inert stick, introduced but abundant predator, a rat, and a novel predator, a snake, that does not occur on Hawaii.
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A major advancement in the use of radio telemetry has been the development of automated radio tracking systems (ARTS) which allow animal movements to be tracked continuously. A new ARTS approach is the use of a network of simple radio receivers (nodes) that collect radio signal strength (RSS) values from animal-borne radio transmitters. However, the use of RSS-based localization methods in wildlife tracking research is new and analytical approaches critical for determining high quality location data have lagged behind technological developments. This data release contains data used to test the application of analytical filters (signal strength, distance among nodes) to data from real and simulated node networks...
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This data release includes metadata and tabular data that document the responses of birds to changes in habitat conditions before and after koa (Acacia koa) defoliation by koa moths (Scotorythra paludicola). Data sets document changes in the (1) use of tree species, (2) arthropod composition of diets, and (3) body mass.
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We examined data from multiple studies (1994-2020) conducted across the avian annual cycle, from multiple locations, to evaluate molt patterns and establish criteria for assignment of age and sex based on the WRP (Wolfe-Ryder-Pyle) method, or molt-cycle age classification system designed specifically for tropical species. In addition, we describe the phenologies of molt and breeding and quantify the differences in males and females based on plumage coloration and morphometrics for eight native species. This data release includes two tabular datasets, one containing breeding phenological data and the other containing morphometric data. The phenological data presents information of active breeding condition in birds...
    map background search result map search result map Hawaii Island forest bird response to simulated nest predator 2015-2016 Hawaii Island bird response to koa moth outbreak, 2013-2014 Change in mass of birds pre- and post-koa moth outbreak, Hawaii Island, 2013-2014 Hawaii Island forest bird phenology and morphometrics from 1994 to 2020 Guam automated radio telemetry network test data 2021 Guam automated radio telemetry network test data 2021 Hawaii Island bird response to koa moth outbreak, 2013-2014 Change in mass of birds pre- and post-koa moth outbreak, Hawaii Island, 2013-2014 Hawaii Island forest bird phenology and morphometrics from 1994 to 2020 Hawaii Island forest bird response to simulated nest predator 2015-2016