How an Osprey Fishes: teacher key

Ospreys, grade 8 edition, written for 8th grade. Ospreys eat almost nothing but fish. They live near water, hunt by diving, build huge stick nests on telephone poles and other structures, and fly south for the winter.

Read the book. Print this page for the key.

Questions and answers

1. About how often does a dive end with a fish caught?
   • On a quarter or more of dives (answer)
   • On almost no dives
   • On every single dive
2. What does how often an osprey catches a fish depend on?
   • Only the size of its nest
   • Only the time of year
   • Its ability, the weather and the tide (answer)
3. Why do the eggs hatch in the order they were laid?
   • The eggs are all laid in one day
   • Incubation starts when the first egg is laid (answer)
   • The largest egg is laid first
4. How many types of colour receptors do ospreys have in the eye?
   • Four (answer)
   • Three
   • Two
5. How far does the yearly migration of UK ospreys take them, round trip?
   • Some 120 km
   • Some 1,200 km
   • Some 12,000 km (answer)
6. Which is the best reason a nest structure suits an osprey?
   • It is close to a road
   • It can support a bulky nest (answer)
   • It is hidden under water