Being an avid bloodsucker the red mite is capable of causing severe and fatal anaemia. They attack their host at night only and hide in cracks, crevices, and nests during the day. They are controlled by the regular and thorough use of an insecticidal wash or spray on the floors, walls, roof and in the nest boxes. Though the life-cycle of the red mite can be completed in only seven days, the parasite can live without a meal for up to five months, so a disused loft must be cleaned and disinfected before re population takes Place.
The history is typically those of sick pigeons with listlessness, reduced willingness to train, lack of performance, increased losses and general malaise. Anaemia is the only symptom but may be so severe as to cause death. When the birds are heard to be restless, stamping their feet at night, red mite must be suspected. If a light is suddenly brought on, the engorged mites can be seen as small red specks, scurrying away from the birds to their hiding places.
Red mites have been shown to transmit various virus diseases. They also attack human beings, causing skin lesions.
Taken from Fit To Win
The most complete guide to health, diagnosis and treatment of racing pigeons
By Wim Peters