Parasitic fly Research (Philornis downsi) INTRODUCED SPECIES
Puerto Ayora, Santa Cruz Island, GALAPAGOS ISLANDS
ECUADOR. South America
Various attractants are being tested on sticky fly traps to attract the Parasitic fly. This fly is highly aggressive and damaging to young birds particularly passarines (Darwin's finches) while in the nest. The fly larvae remains hidden in the weave of the nest during the day and emerges during the night to feed on the young chicks entering mostly through the nostrils causing their deaths.