
Brine shrimp and brine flies
Tiny crustaceans and insects carry energy from Great Salt Lake's microscopic producers to its birds.
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Keep the saline lake and the freshwater wetland margins distinct in the guide.
Keep the saline lake and the freshwater wetland margins distinct in the guide. Bear River refuge protects marshes at the river's mouth and manages water depths with dikes and water-control structures. Its location connects the Great Salt Lake landscape to migratory birds. Arches' bird overview provides a broader ecological lesson: water, cover and food concentrate bird life in river corridors, while different bird communities use uplands. Habitat matters more than a statewide bird checklist.
The brine shrimp and brine flies, and the eared grebe that feeds on them, explain the saline side of the food web. The American avocet, black-necked stilt, tundra swan and the Bear River refuge overview show how birds use the surrounding wetlands. They don't all eat the same prey or use the same water. Lake levels and refuge access change, so check current notices; the species accounts describe habits, not today's conditions.

Tiny crustaceans and insects carry energy from Great Salt Lake's microscopic producers to its birds.
A small diving bird whose long autumn stopovers reveal the importance of Great Salt Lake's invertebrate food supply.
An upturned bill, blue-gray legs and a sweeping feeding motion make this wetland shorebird especially distinctive.

Pink legs and a straight, needlelike bill distinguish this black-and-white wader from its avocet neighbors.
A large white migrant whose family groups link Utah's wetlands with Arctic nesting country.

Read the refuge as a changing set of habitats, from shallow feeding flats to marsh cover and deeper water.