An atoll is a coral reef island, or islets. They are characteristically ring-shaped with a central lagoon, and sometimes a central island. Atolls are found on the Hawaiian and South Pacific Islands harbor a number species not found in the rest of Pacific Birds' area. They are teaming with fish, providing ample food for nesting seabirds such as Laysan Albatross, Red-footed Booby, and White-tailed Tropicbird. Palmyra Atoll is estimated to support a million nesting seabirds and it is also an important stopover for birds migrating through the East-Asian Australasian Flyway.
Due to their low elevation, atolls are naturally susceptible to erosion from waves and wind. Sea level rise is a now dire threat to both seabirds and people inhabiting atolls. With only a small rise in sea level, the lowest elevation Pacific atolls will vanish.
Habitats Our Birds Need
Arctic and Subarctic Tundra
Alaska has vast expanses of arctic and subalpine tundra characterized by low temperatures, permafrost, and a short growing season.
Coastal Dunes and Beaches
Coastal dunes and beach communities face a dynamic, harsh environment that requires plants to have unique survival mechanisms.
Conifer forests, including our magnificent temperate rainforests, dominate the Pacific Northwest from California to southeast Alaska.
Hawaiian Montane Forest
‘Ohi’a and in some areas koa trees dominate the canopy of the lush cloud forests found on the higher elevations of Kaua’i, Maui, Hawai’i, O’ahu, and Moloka’i.
Hawaii’s freshwater wetlands support the Ae’o, or Hawaiian Stilt, and five other species of endemic, endangered waterbirds.
Intertidal Rocky Shorelines
Rocky shorelines along the North Pacific coastline occupy the region between high and low tide.
An atoll is a coral reef island, or islets. They are are characteristically ring-shaped with a central lagoon, and sometimes a central island.
Riparian corridors occur along rivers and streams and across floodplains and terraces.