Hummingbirds, as with all birds, could only live in an environment that provides them with food, such as bugs and plentiful nectar, as well as clean water, protection, and healthy forest types.
Hummingbirds have evolved to cope with cold weather and a scarcity of food. This is accomplished by slowing their development and experiencing a state known as torpor. The bird's temperature decreases to as little as 70 degrees Fahrenheit throughout torpor, enabling it to function before conditions change.
Courageous means to make the right desicions and act nobly under danger. I used courage to stand up to a bully. The bully left me alone. It was better. Gandalf from LOTR displays courage.
