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.
Itâs easy to make hummingbird food with just table sugar and water. Use table sugar rather than honey to make hummingbird foodâwhen honey is diluted with water, bacteria and fungus thrive in it. The normal mixture, especially ideal during hot or dry weather, is Â¼ cup of sugar per cup of water. During cold, rainy, or foggy conditions when fresh water is plentiful but birds need more energy, itâs fine to make the mixture 1/3 cup of sugar per cup of water.