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Bird Rocks
This site is a small portion of the Oregon Islands NWR. It is comprised of four large rocks including seabird colonies 219-017, 270-018, 270-019 and 270-020. Only 270-020 contains low vegetation, the rest are mostly devoid of vegetation and little soil is present.
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Bird Rocks
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This site is a small portion of the Oregon Islands NWR. It is comprised of four large rocks including seabird colonies 219-017, 270-018, 270-019 and 270-020. Only 270-020 contains low vegetation, the rest are mostly devoid of vegetation and little soil is present.
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Location: On the northern Oregon coast, just north of Cannon Beach, near Ecola State Park, southwest Clatsop County. Vicinity maps (rocks are unlabeled offshore of Chapman Point): TopoZone, USGS.
Description: This site is a small portion of the Oregon Islands NWR. It is comprised of four large rocks including seabird colonies 219-017, 270-018, 270-019 and 270-020. Only 270-020 contains low vegetation, the rest are mostly devoid of vegetation and little soil is present.
Outstanding Features: Over 200 Brown Pelicans have been observed at this site. These rocks support more than 6% of Oregon's breeding population of Common Murres and 27% of the state's breeding Brandt's Cormorant population. A total of 49,542 seabirds nest here including six species. Bald Eagles routinely forage on seabirds at this location with up to three seen at one time.
Conservation Issues: Human disturbance is a concern at this site from low flying aircraft, close approach of boats, and humans on the beach and the adjacent mainland. Educational efforts are underway to alleviate these problems. Significant increase in bald eagle predation, particularly from juvenile birds, has been causing widespread nesting failure at these colonies since 1994. Some abandonment of this site is occuring.Links: • Summary Page of Audubon Society of Portland data in National Audubon Society database
• Oregon Coast National Wildlife Refuge Complex - 45.9084651906 -123.973546028
Location: On the northern Oregon coast, just north of Cannon Beach, near Ecola State Park, southwest Clatsop County. Vicinity maps (rocks are unlabeled offshore of Chapman Point): TopoZone, USGS.
Description: This site is a small portion of the Oregon Islands NWR. It is comprised of four large rocks including seabird colonies 219-017, 270-018, 270-019 and 270-020. Only 270-020 contains low vegetation, the rest are mostly devoid of vegetation and little soil is present.
Outstanding Features: Over 200 Brown Pelicans have been observed at this site. These rocks support more than 6% of Oregon's breeding population of Common Murres and 27% of the state's breeding Brandt's Cormorant population. A total of 49,542 seabirds nest here including six species. Bald Eagles routinely forage on seabirds at this location with up to three seen at one time.
Conservation Issues: Human disturbance is a concern at this site from low flying aircraft, close approach of boats, and humans on the beach and the adjacent mainland. Educational efforts are underway to alleviate these problems. Significant increase in bald eagle predation, particularly from juvenile birds, has been causing widespread nesting failure at these colonies since 1994. Some abandonment of this site is occuring.
Links: • Summary Page of Audubon Society of Portland data in National Audubon Society database
• Oregon Coast National Wildlife Refuge Complex
