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.
Hummingbirds also glean insects from leaves and from spider webs. To maintain a healthy ecosystem in your yard: 1  Eliminate pesticides. 2  Spiders and insects (arthropods) are an important part of an adult bird's diet, and young hummingbirds still in the nest are almost exclusively fed arthropods.lowers, feeders, perches, insects, and water are the key ingredients to a healthy yard that will attract these amazing jewels. Flowers. Hummingbirds are specialized for nectar-eating, evident by long bills and grooved tongues ideal for probing flowers.