However, Kalahari tree skinks have learned to eavesdrop on sociable weavers to warn of approaching pygmy falcons and run for cover. They hunt from a perch, swooping down on potential prey. Pygmy falcons prey on reptiles and insects, but will occasionally prey on small birds as well as rodents. This is important because this reduces the energy requirements for rest-phase thermoregulation by occupants. They regulate their body temperature by thermal buffering provided by sociable weaver colonies and communal roosting by the falcons. Pygmy falcons show physiological traits that have adaptive value in a region affected by environmental variability associated with the El Niño Southern Oscillation cycle as well varying food source. This range is estimated to have an area of 2.7 million km 2, and the total population is estimated to be between 100,000 and 1 million birds. semitorquatus occurs from Angola to northern South Africa. castanonotus occurs from South Sudan to Somalia and south to Uganda and Tanzania P. The call is "a high-pitched kikiKIK, repeated" (Kenya) or "a 'chip-chip' and a 'kik-kik-kik-kik'" (southern Africa). In size, pattern, and the habit of perching upright on an exposed branch or treetop, this species resembles some shrikes. The flight feathers of the wings are spotted black and white (more black above, more white below) the tail is barred black and white. Juveniles have a brown back, duller than adult females, with a rufous wash on the breast. African Pygmy Falcon Female at Buffalo Springs National Reserve, KenyaĪdult pygmy falcons are white below and on the face, grey above, and females having a chestnut back.
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