Size and Retention of Breeding Territories of Yellow-Billed Loons ( Gavia adamsii) in Alaska and Canada.

The article discusses the effect of size and retention of territories for yellow-billed loons based on a study using satellite transmitters that quantified the habit limitations of three loon breeding populations in Alaska and Canada. Study results show that the range of territory size corresponded to the size of lakes in the areas, and loons who lost their habitats did not occupy new territories. The study also suggests that the lake sizes suitable for breeding may limit population size.