More than 100,000 cases have been reported since 1982. This reveals the dark skin beneath. This is just part of the bird's annual postbreeding molt. All birds replace their feathers periodically. The loss of body or head feathers is seldom that obvious.
Birds just look a bit ragged.
This might seem pretty traumatic, but the birds appear to take it in stride. And the feathers grow back well before cold weather arrives. This definitive guide by the founder of the Lyme Disease Foundation will show readers how to recognize the symptoms of Lyme disease, how to get the best medical treatment, and how to avoid disease-carrying ticks. The answers to these and over a thousand other questions make up this vastly informative yet compact and entertaining volume about birds . The Bird Almanac Besides a mammoth listing of bird species worldwide, The Bird Almanac includes detailed information on all aspects of avian physiology as well as a complete guide to the ornithological community, from organizations to Internet resources.