tracking grizzlies lab

5) This could be due to bears avoiding areas with high human activity.
This contains more info :
http://www.bearbiology.com/fileadmin/tpl/Downloads/URSUS/Vol_13/Proctor_13.pdf

6) The Monarch is closely related to two very similar species which formed the Danaus (Danaus) subgenus before 2005. The first is the Jamaican monarch (D. cleophile) from Jamaica and Hispaniola. The second is the Southern Monarch (D. erippus), of South America south of the Amazon river. The Southern Monarch is almost indistinguishable from the Monarch as an adult, the pupae are somewhat different, and is often considered a subspecies of the Monarch proper. But analysis of morphological, mtDNA 12S rRNA, cytochrome c oxidase subunit I, nuclear DNA 18S rRNA and EF1 subunit α sequence data by Smith et al. (2005) indicates that it is better considered a distinct species. The separation of the Monarch and Southern Monarch is comparatively recent. In all likelihood, the ancestors of the Southern Monarch separated from the Monarch's population some 2 mya, at the end of the Pliocene. At the time sea levels were higher and the entire Amazonas lowland was a vast expanse of brackish swamp that offered hardly any butterfly habitat.
http://webcache.googleusercontent.com/se...

The monarch is widely distributed across North America, from Central America northwards to southern Canada, and from the Atlantic to the Pacific coasts. Within Canada, the monarch has been recorded in all 10 provinces and in the Northwest Territories.

Three geographically distinct populations — eastern, western, and Central American — make up the total North American range of the species. EACH OF THESE POPULATIONS HAS A DISTINCT MIGRATORY PATTERN.
(So, it is sure that they consist a UNIQUE breeding population and they don't mix with each other.)

The eastern population is the largest of the three and includes all monarchs east of the Rocky Mountains in the United States and Canada. The eastern population accounts for over 90 percent of the Canadian distribution of the species. The current annual breeding range of the eastern population extends from the Gulf Coast states northwards to southern Canada, and from the Great Plains states and Prairie provinces eastwards to the Atlantic coast of the United States and the Maritime provinces.
http://webcache.googleusercontent.com/se...