Aerial and ground surveys were conducted on agricultural land of the Fraser River Delta, British Columbia, Canada, between October, 1980 and March, 1981 to determine the effects
of agricultural practices on health of waterfowl. No duck kills attributable to agricultural practices were detected
(one hawk was recovered dead with a high level of fensulfothion insecticide in its gut). Ten times more ducks fed on fields at night than during the day. Fields in the Municipality of Surrey were more heavily used by ducks than fields in the Municipalities of Delta or Richmond. No organophosphate
and only trace amounts of organochlorine pesticides were
detected in bird tissues but lead, copper and cadmium levels in some bird tissues were high.
Jury, Douglas N.. 1981. The Health Status of Waterfowl Populations in a Designated Agricultural Area of the Fraser Delta-- 1980. Ministry of Environment; Ministry of Agriculture and Food; Canadian Wildlife Service
Topic: Wildlife Health
Keywords: Fraser Delta, Waterfowl, Health, Agricultural, British Columbia
Scientific Name: Anas platyrhynchos
English Name: Mallard
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