Skip to main content

1. Photograph index, camera settings, and locational information for images used to count Red-footed Boobies (Sula sula) nesting at Kīlauea Point National Wildlife Refuge, Kauaʻi, in 2019


Publication Date
Start Date
End Date


Felis, J.J., Kelsey, E.C., Adams, J., Stenske, J.G., and White, L.M., 2020, Population estimates for selected breeding seabirds at Kīlauea Point National Wildlife Refuge, Kauaʻi, in 2019: U.S. Geological Survey data release,


During 13-18 May, 2019, we censused red-footed boobies (Sula sula) at Kīlauea Point National Wildlife Refuge (KPNWR), Kauaʻi. To evaluate ground-based visual counts and assess variability among methods, we employed photographic techniques to count nesting red-footed boobies at KPNWR in three distinct sub-colony areas: Crater Hill East, Crater Hill Interior, and Crater Hill West (see associated data series report for delineation of sub-colony areas). For ground-based photos, we used a Sony a7rii camera (42 megapixel full-frame) equipped with a Sony 100-400mm F4.5-5.6G lens to allow sufficient resolution to count nests and birds. We achieved pixel resolutions (as a function of camera resolution, focal length, and distance to birds) of [...]


Attached Files

Click on title to download individual files attached to this item.

RFBO_PhotoList.csv 76.12 KB text/csv


These data were collected to determine the population size of red-footed boobies (Sula sula) breeding at Kīlauea Point National Wildlife Refuge, Kauaʻi, in 2019.



  • USGS Western Ecological Research Center



Data source
Input directly

Item Actions

View Item as ...

Save Item as ...

View Item...