This species has been severely affected by the parasitic fly Philornis downsi, the larvae of which feed on the blood of the defenseless chicks in the nest. There are only an estimated 100 mangrove finches remaining in a small area on the northwest of Isabela Island. This year's work team is comprised of five staff members and volunteers from the Charles Darwin Research Station (CDRS), four members of the San Diego Zoo and the Auckland Zoo, and rangers of the Galapagos National Park Directorate (GNPD).