Crocodiles and Bird Behavior in Africa

The Luangwa River in Africa is home to numerous crocodiles that coexist peacefully, knowing they will eventually find food. As the dry season progresses, various animals, including tiny birds, are drawn to the river, the last water source in the valley. By November, these birds form massive flocks, creating super colonies that weigh over 50 tons. Crocodiles take advantage of this by ambushing the birds, but the birds' quick reactions often allow them to escape.

Which river is known for having the highest number of crocodiles in Africa?

• Nile River

• Luangwa River

• Zambezi River

• Congo River

What behavior do the largest crocodiles exhibit towards each other?

• They fight constantly

• They avoid each other

• They tolerate each other

• They hunt together

During the dry season, what draws animals to the Luangwa River?

• Abundant fish

• The last source of water

• Cool shade

• Rich vegetation

By November, what is the estimated weight of the bird super colonies?

• 10 tons

• 25 tons

• 75 tons

• 50 tons

How do the birds avoid being caught by crocodiles?

• They hide in the bushes

• They fly away immediately

• They dive underwater

• They move as a coordinated flock

What triggers the birds' synchronized movement?

• A change in wind direction

• The movements of their neighbors

• A signal from a leader

• A loud noise