Ranges, Routes and Roosts: teacher key

Bald Eagles, grade 9 edition, written for 9th grade. Where bald eagles live and travel, how they find food, how they raise young and how their numbers fell and rose.

Read the book. Print this page for the key.

Questions and answers

1. What can affect how well an eagle catches fish?
   • A river's flow speed and rain (answer)
   • The color of the sky
   • The size of its nest
2. How do southern adult eagles that breed south of 40 degrees north often live?
   • They migrate to Alaska
   • As permanent residents (answer)
   • They leave every August
3. Where do eagles nest in treeless places such as Alaska?
   • In tall trees
   • On power poles only
   • On the ground, often on cliffs, sea stacks or ridges (answer)
4. What can you tell from the home ranges in Oregon and Washington?
   • Bald eagle home ranges were 6 to 47 square kilometers (answer)
   • Every home range is the same size
   • Home ranges are under 1 square kilometer
5. What does the word forage mean?
   • Build a nest
   • Look for food (answer)
   • Fly south
6. About how many days do eggs take to hatch?
   • About 3 days
   • About 3 months
   • About 35 days (answer)

Words

• crop: a food pouch
• migrate: move each season
• forage: look for food
• insecticide: bug poison
• roost: a resting place