They typically screech loudly when they are defending their young. Screech owls often hunt their prey from tree perches and consume a varied diet that includes mice, birds, insects, earthworms and crayfish. They build their nests in hollow trees, tree stumps and hollow trunks.
Medical Definition of TSETSE FLY. : any of several dipteran flies of the genus Glossina that occur in sub-Saharan Africa and include vectors of human and animal trypanosomes (as those causing sleeping sickness and nagana)âcalled also tsetse.ull Definition of TSETSE FLY. : any of several dipteran flies (genus Glossina) that occur in Africa south of the Sahara and include vectors of human and animal trypanosomes âcalled also tsetse â compare sleeping sickness. See tsetse fly defined for English-language learners. See tsetse fly defined for kids.
The adult fly emerges from the pupa in the ground after about 30 days. Over a period of 12-14 days it matures, mates and, if it is a female, deposits its first larva.Thus 50 days elapse between the emergence of one female fly and the subsequent emergence of the first of its progeny.or a more detailed description of the life cycle and general biology of tsetse flies, see Stephen Leak's excellent book (Leak, 1999). References. Leak, S.G.A. (1998) Tsetse biology and ecology: their role in the epidemiology and control of trypanosomosis.