Seven months in the wild with brown bear families.

The LESFILM production team headed there and spent seven months observing and filming hidden secrets the newborn bear cubs' daily lives throughout their first year on Earth. Tensions are running high. WCS research has shown that some female bears with cubs do not approach salmon streams, to avoid risking their cubs being killed by another bear. Some species happened to be 35 years old with the weight not more than 200 kilograms. Trailer: About. However, age and weight are not always connected.

The fish are on their annual migration from the sea.
Vitaly Nikolayenko, one of Russia’s best-known bear researchers and a man who spent 25 years living with the enormous brown bears of the wild Kamchatka Peninsula, has been found dead in … The age periods they gain most of their weight are 9-12, 25-35, and up to 40 years old. Kamchatka bears grow and gain weight all their life span.
Female brown bears in Kamchatka can begin to reproduce as early as 4 years of age and typically have litters of 2-3 cubs.

The bears are usually solitary, but once a year they are all drawn here by one thing, salmon.

Reproduction and Life Span.

All over Russia’s Kamchatka peninsula, brown bears are heading towards rivers and streams.

The South Kamchatka Federal Sanctuary is often called a bear paradise. 'Kamchatka Bears.