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: Hummingbirds feed frequently on nectar-rich flowers, and planting flowers specifically to attract these flying jewels is an easy way to make any yard a perfect hummingbird habitat. While the color red is very attractive to hummingbirds, the most important factor is that the flowers must produce plenty of nectar. Bleeding hearts, impatiens, petunias, salvias, bee balm, columbine, cannas, viburnums, honeysuckles and many other flower, tree and shrub species will attract a variety of hummingbirds.