Causes and symptoms. Fatigue may be the result of one or more environmental causes such as inadequate rest, improper diet, work and home stressors, or poor physical conditioning, or one symptom of a chronic medical condition or disease process in the body.
1 A hummingbird will use its tongue to lap up nectar from flowers and feeders. 2  A hummingbird's tongue is grooved like the shape of a W. 3  Hummingbirds have tiny hairs on the tip of the tongue to help lap up nectar.
Plants that attract hummingbirds often have brightly-colored, tubular-shaped flowers that make is easy for hummingbirds to feed on nectar. These hummingbird plants contain include bulbs, perennials, and wildflowers that will attract hummingbirds to your garden.