• Sunset view of Glacier Bay and the surrounding Fairweather Mountains.

    Glacier Bay

    National Park & Preserve Alaska

Seabirds: Unit Outline

 
gull nest

Focus Concept:
The significance of seabirds to Glacier Bay's varied ecosystems and human traditions

Sub-concepts:
Natural history of a wide variety of seabirds found in Glacier Bay; Taxonomy of seabirds; pressures of predation by animals and humans; the interaction between the park and native American subsistence traditions; habitats; special adaptations

Generalization:
Thousands of seabirds live, eat and breed in Glacier Bay National Park and Preserve in the course of a year. The high diversity and abundance of birdlife is due to the variety and extent of favorable breeding habitats available within the park, many of which contain ample food resources and low numbers of land predators.

Guiding Question
What are the seabirds that live in Glacier Bay National Park and Preserve and what is their importance to the area's ecosystems?

Critical Content
Students will know ...

  1. The natural history of seabirds found in Glacier Bay
  2. The taxonomy of seabirds
  3. The levels of predator pressures on Glaucous-winged gulls including possible human egg harvesting
  4. The importance of Glacier Bay's seabirds to the regions ecosystems

Skill Objectives
Students will be able to ...

  1. Research to create a glossary of terms associated with the study of seabirds.
  2. Learn the natural history of seabirds found in Glacier Bay National Park and Preserve.
  3. Use the vocabulary in skits portraying the lives of Glacier Bay seabirds.
  4. For seabirds found in Glacier Bay describe identifying features, including color, wing size/shape, beak size/shape, range and habitat, flight behavior, breeding biology, feeding style and, food/prey of birds specific to each of the 5 taxonomic orders in which seabirds are found.
  5. Use data from their research to create an illustrated field guide highlighting the seabirds of Glacier Bay.
  6. Analyze data from a study on the nesting behavior and predation of glaucous-winged gulls on South Marble Island in Glacier Bay to draw conclusions and make recommendations concerning traditional harvesting of these eggs by the Hoonah Tlingit Native Americans.
  7. Simulate 15 predation scenarios focusing on the South Marble Island glaucous-winged gull colony to assess the usefulness of computer models as a methodology of predicting outcomes of specific actions on events in nature such as breeding and predation.
 

Did You Know?

Black Bear

Researchers believe that black bears, searching for new and abundant food sources, returned to Glacier Bay via the Endicott Gap. Today, the presence of black bears in the reborn forests of the lower bay is evidence of a successful search.