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.
Northern mockingbirds are omnivores. Their main foods are insects, berries and seeds. Insects they eat include beetles (order Coleoptera), ants (order Hymenoptera), grasshoppers (order Orthoptera) and spiders (order Araneae). They eat the fruits of holly, mulberries, raspberries, dogwoods, brambles, grapes and figs.