|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
|For more information about IBA monitoring please click here|
The site boundary is based upon a seaward extension of 70 km around Uracus to encompass the foraging range of IBA threshold numbers of waterbirds based upon a 1988 population estimate of 95,000 breeding pairs, Brown Noddy based upon a 1988 population estimate of 6,000 breeding pairs and Red-tailed Tropicbird based upon a 1988 population estimate of 200 breeding pairs from Reichel, J. and Glass, P. (1991) Checklist of the birds of the Mariana Islands. 'Elapiao, 5(1): 3-11.
BirdLife International (2022) Important Bird Areas factsheet: Uracus Marine. Downloaded from http://www.birdlife.org on 17/08/2022.