1. 2 Then we see the goslings in the spring.

2. 23 Some go around shaking the eggs to kill the embryo goslings.

3. 3 Their goslings never learned how to migrate, and their descendants live on.

4. 19 It is only when intrusive ethologists steal and hatch eggs that the wide tolerance of the goslings is revealed.

5. 21 Adult greylag geese were more aloof and watched anxiously as their goslings joined in the competition for food.

6. 18 The geese moved in, felt at home, laid eggs - and a most satisfactory twenty-four goslings hatched that year.

7. He could even remember the time he picked out six yellow goslings from a box kept warm by a light bulb.

8. 22 He could even remember the time he picked out six yellow goslings from a box kept warm by a light bulb.