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Recent accomplishments of CDFW's scientific community


Fisheries Biologists Showcase Delta Bass at International Sportsmen’s Expo

Man wearing blue and beige foul weather gear and orange life vest holding net with long pole leaning over boat railing on boat on water. Shipwreck in background.
Among the more popular attractions at the Sacramento International Sportsmen’s Expo each January is the Western Bass Aquarium Demo Tank.The 6,000-gallon aquarium displays dozens of trophy largemouth bass collected by CDFW biologists from the Sacramento-San Joaquin Delta.

How Harvest Numbers Help Biologists Plan for the Future

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As California deer hunters head to the fields, forests and mountains this summer and fall, their experiences will provide wildlife biologists with key data on the health of the state’s deer herds.

CDFW Completes 2017 Waterfowl Breeding Population Survey

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The California Department of Fish and Wildlife (CDFW) has completed its annual waterfowl breeding population survey.

Deer DNA Study in the Sierra Nevada and Central Coast Ranges

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Deer population estimates are an important element of the California Department of Fish and Wildlife’s (CDFW) management decisions regarding the species – including setting quotas for deer-hunting seasons, acquiring land and identifying habitat improvement projects. Historically, CDFW has relied upon helicopter surveys to obtain these population estimates, but such surveys can be problematic. While they are effective in open and largely flat areas, they are less so in tree-laden areas where deer are hidden from sight. They can also be extremely expensive.