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The ancestors of American black bears and Asian black bears diverged from sun bears 4.58 mya. The American black bear then split from the Asian black bear 4.08 mya. [ 3 ] [ 9 ] The earliest American black bear fossils, which were located in Port Kennedy, Pennsylvania , greatly resemble the Asian species, [ 10 ] though later specimens grew to ...
Swarm is an open-source agent-based modeling simulation package, useful for simulating the interaction of agents (social or biological) and their emergent collective behavior. Swarm was initially developed at the Santa Fe Institute in the mid-1990s, and since 1999 has been maintained by the non-profit Swarm Development Group .
Swarming is a honey bee colony's natural means of reproduction.In the process of swarming, a single colony splits into two or more distinct colonies. [1]Swarming is mainly a spring phenomenon, usually within a two- or three-week period depending on the locale, but occasional swarms can happen throughout the producing season.
When honey bees emerge from a hive to form a swarm, they may gather on a branch of a tree or on a bush only a few meters from the hive. The bees cluster about the queen and send out 20–50 scouts to find suitable new nest locations. The scouts are the most experienced foragers in the cluster.
The glacier bear (Ursus americanus emmonsii), sometimes referred to as the "blue bear", is a subspecies of American black bear with silver-blue or gray hair endemic from Southeast Alaska, to the extreme northwestern tip of British Columbia, and to the extreme southwest of the Yukon.
These bears grow to 4-6 feet long and can weigh between 150 and 650 pounds. Males standing on their hind legs can be over 7 feet tall! While they're the smallest of the bears, you certainly don't ...
It is better to calmly stand your ground and wait until the bear walks away. 9. Myth: Black bear attacks are common. They are rare; most bears will be gone before you know they are there. 10. Myth ...
Although the exact population of Haida Gwaii black bears is not known, over 900 of the bears have been killed by hunters since the late 1970s. [ 3 ] In 1995, The Council of the Haida Nation passed a resolution to halt the recreational hunting of bears within the archipelago, stating that the killing was wasteful and went against Haida ethics.