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Fueling Up in February
Longer hours of sunlight in February trigger an urge to eat, eat, eat! Rubythroats stuff themselves with insects and spiders. Hummingbirds can almost double their weight in about a week. Layers of fat build on the hummingbird's back, belly, and throat. Hummingbirds typically eat nectar every 15 minutes, because flight burns so much energy. Will its fat reserves be enough to fuel the 500-mile flight?

Monarch butterfly at sanctuary in Mexico in snow.

Image: Rachel Powless

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