how do birds sing

Here are some MCQs on Birds  1. Which of the following birds can fly backward? a) Hawk b) Hummingbird c) Penguin d) Ostrich 2. The national bird of Canada is: a) Eagle b) Penguin c) Kiwi d) Common Loon 3. Penguins are flightless birds found exclusively in: a) Arctic region b) Antarctica c) Rainforests d) … Read more