When nesting, geese will return a dislodged egg to safety by gently guiding it along the ground with their beak, rolling the egg back to the nest. Geese will sometimes do this to other egg-sized objects and have been known to continue the same behaviour back to the nest even when a researcher removes the egg from under their beak. This type of behaviour was labelled by ethologists as :

Unusual Bird ParentingBirds have a reputation as excellent parents. They expend a great deal of effort in building nests in which to lay their eggs. They patiently incubate the eggs, keeping them warm and safe until they hatch. Birds also bring food to their newly hatched offspring until the baby birds are independent. However, some unusual birds, known as brood parasites, don't provide any parental care for their young. Perhaps the most famous brood parasite is the cuckoo. Instead of building a nest, the cuckoo lays her eggs in the nest of another species with similar-looking eggs. The female cuckoo simply removes an egg laid by the host female, lays her own egg, and then leaves, expecting the host bird to care for the imposter.What is the main, or central, idea of the passage?

Think before you actOnce upon a time, a man and his wife had the good fortune to have a goose which laid a golden egg every day. Lucky though they were, they soon began to think they were not getting rich fast enough.They imagined that if the bird must be able to lay golden eggs, its insides must be made of gold. And they thought that if they could get all that precious metal at once, they would get mighty rich very soon. So the man and his wife decided to kill the bird.However, upon cutting the goose open, they were shocked to find that its innards were like that of any other goose!  Q 09.   What did the couple decide?  Ops:   A. The couple decided to set the bird free    B. The couple decided to send it back to its owner    C. The couple decided to kill the bird    D. The couple decided to eat the bird at once

Which item best illustrates the fact that eggs can act as a foam?*1 pointFried eggsCustardMeringueBrownies

Unlike mammals, birds incubate their eggs outside their body. The underlinedword means

Konrad Lorenz’s study of attachment behaviour in geese showed that ___________ occurred shortly after birth: Informing Imprinting Forming Printing