See Hatch et al. 1993a and references cited therein for data sources. Since 1970 common murres have declined significantly at two colonies, and thick-billed murres have declined at one. The number of colony-years included in each mean is indicated. See Hatch et al. 1993a for raw data.
Available data are insufficient to identify overall trends.
No breeding seabirds are currently listed as threatened or endangered in Alaska. The maximum count of individuals is indicated for each location. See Hatch 1993a for data sources. Other Species Scant information is available to assess numerical changes for most seabird species in Alaska. We know that some species were seriously reduced or locally extirpated by foxes introduced to islands in the 1800's and early 1900's.