Guardian Nature School Team Contact Blog Project Noah Facebook Project Noah Twitter

A global community of nature enthusiasts
photographing and learning about wildlife

Join Project Noah!
nature school apple icon

Project Noah Nature School visit nature school

Calfornia Black Bear

Ursus americanus californiensis

Description:

A medium-sized bear native to North America. It is the continent's smallest and most common bear species. This is a subspecies found in California. The breeding period usually occurs in the June–July period, though it can extend to August in the species' northern range. The breeding period lasts for 2–3 weeks. Sows tend to be short tempered with their mates after copulating. The gestation period lasts 235 days, and litters are usually born in late January to early February. Litters usually consist of two cubs, though litters of 6 have been recorded. At birth, cubs weigh 10–16 ounces (280–450 g), and measure 8 inches in length. They are born with fine, gray, downlike hair, and their hind quarters are underdeveloped. They typically open their eyes after 28–40 days, and begin walking after 5 weeks. Cubs are dependent on their mother's milk for 30 weeks, and will reach independence at 16–18 months. At the age of six weeks, they attain 2 lb, by 8 weeks they reach 5 lb and by the age of 6 months they weigh 40–60 lb. They reach sexual maturity at the age of three years, and attain their full growth at 5 years.[31]

Habitat:

mountain ranges of southern California, north through the Central Valley to southern Oregon

Species ID Suggestions



Sign in to suggest organism ID

4 Comments

HeatherLaineKranz
HeatherLaineKranz 9 years ago

thank you, everyone.

CaitlynBartsch
CaitlynBartsch 9 years ago

I've only seen a cub once

Sachin Zaveri
Sachin Zaveri 9 years ago

Nice Spotting,

KarenL
KarenL 9 years ago

Wonderful photos Heather!

HeatherLaineKranz
Spotted by
HeatherLaineKranz

California, USA

Spotted on May 23, 2011
Submitted on Jan 16, 2012

Noah Guardians
Noah Sponsors

Join the Project Noah Team Join Project Noah Team