efe-epaBy Susana Madera Quito

Hidden among the clouds that caress a mountain in Quito, the Yanachocha nature preserve forest protects the blackbreasted puffleg, a rare type of tiny hummingbird.

About seven centimeters (2.75 inches) long and weighing just 10 grams (0.36 ounce), with black feathers on its breast but blue and violet ones on the rest of its body, depending on how the sunlight strikes them, the hummingbird has been declared the emblematic bird of Ecuador's national capital, but it is a threatened species.