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Life Cycle

Bear Viewing Hibernation Body Language
Physical Description Preferred Foods Research & Management
Life Cycle Reproduction  

January
- Denned bears are resting in a slightly lowered metabolic state
- Some bears (mainly boars) may periodically leave dens throughout the winter season
February
- Cubs weighing less than 1 pound are born in dens
March
-Boars begin emerging from winter dens for spring foraging (mainly grasses, forbs, roots)
April
- Lone sows and subadults begin emerging
- Sows with 1-3 year old cubs begin emerging
May
- Cubs weighing 10-015 pounds begin emerging with sows who have lost up to 30% body weight over the winter
June
- Sows begin driving off 2-3 year old cubs
- Mating season peaks
July
- Boars, sows and subadults begin competing over fishing spots at salmon spawning streams
August
- Salmon feeding  (red, pink, chum) peaks in many areas
- Bears start feeding on berries
September
- Cubs of the year (COYs) now weigh up to 80 pounds
October
- Bears feed on Coho salmon throughout Kodiak
- Large males achieve maximum weight of up to 1,500 pounds; few females weigh in excess of 650 pounds
November
- Bears begin entering dens
- COYs have gained up to 100 pounds in their first 9 months of life
- Most impregnated sows are denned - embryo implantation occurs
December
- Most Kodiak brown bear have entered winter dens (in a mild winter, some may den little or not at all)

 


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