The White Sturgeon

By James H. Hale The White Sturgeon (Acipenser transmontanus) is the largest freshwater fish in North America, with the maximum recorded length of any age class at 20 feet. The maximum published weight known is 1,799 pounds, with a reported age of 104 years. White Sturgeon greater than 15 feet are suspected of reaching weights […]

One Pair of Breeding Osprey in Contra Costa County

Erecting artificial nest platforms could help the Osprey by James Hale The Osprey (Pandion haliaetus) is a fish-eating, diurnal bird of prey with a cosmopolitan range. Sometimes called fish eagle, sea hawk, river hawk, or fish hawk, this large raptor is found in a wide variety of habitats on all continents except Antarctica. It nests […]

Peregrine Falcon conservation and recovery

By James Hale;             Captive breeding programs have led to the falcons’ recovery The Peregrine Falcon (Falco peregrinus) is a large cosmopolitan falcon with superior hunting skills capable of flight exceeding 240 miles per hour. The scientific name peregrinus is Latin for wandering, in reference to its worldwide range. The […]