Our main study efforts have been concentrated at observation sites in the front ranges of the Rocky Mountains of Alberta where one large stream of Golden Eagles passes twice each year. This powerful eagle is North America's largest bird of prey and the national bird of Mexico. North American Golden Eagles living in Alaska or Canada migrate South. Donate through ATB Cares.Donations through ATB Cares will be matched up to 15%! They are extremely swift, and can dive upon their quarry at speeds of more than 150 miles per hour. Smaller, more remote passes exist but the gravel roads or trails using them tend to be of poor quality. Golden eagles migrate short to medium distances. The eagle was two years old when captured in 2008. Along the front (eastern) ranges the layers are turned up into an almost vertical orientation. The mountains rimming this valley are thought to provide a near perfect route between the Golden Eagle wintering grounds in the western U.S.A and their breeding grounds in northwest Canada and Alaska. Weather is also a problem especially during spring when the smaller passes remain snowbound until the migration is over. At other times our own bad weather is the cause. Mar 1 – April 22, © Rocky Mountain Eagle Research Foundation, RMERF in the News – Weather Network visit. These birds are dark brown, with lighter golden-brown plumage on their heads and necks. The peak migration period lasts from The peak migration period lasts from mid March to the end of April. Since 1992, Rocky Mountain Eagle Research Foundation (RMERF) volunteers have performed annual raptor migration counts at the same site location in the Kananaskis Country, Alberta, spring and fall; significantly providing data to the understanding of and amazement in watching Golden Eagles. They are monogamous and may remain with their mate for several years or possibly for life. Dwindling numbers are seen until early December. During the peak of summer in Utah, hunting and territorial flights occurred mostly between 9:00 and 11:00 am and 4:00 and 6:00 pm, with the remaining 15 or so h… 2020 National Geographic Partners, LLC. Reasonably close accommodation where visitors can stay. You would think that with 700 km of front ranges in Alberta and another 400 km in northeast British Colombia there should be many excellent sites for Golden Eagle observation. At Mt. They have even been known to attack full grown deer. Alaskan and Canadian eagles typically fly south in the fall, for example, while birds that live in the western continental U.S. tend to remain in their ranges year-round. In fact they are pierced by only a handful of passes suitable for highways. Another stream uses geological features along the Rocky Mountain Trench in British Columbia, and some regular observations have started there near Cranbook, BC. When wind conditions are right the eagles sail by at over 100 km/hour with hardly any effort. They build huge nests to which they may return for several breeding years. Typically, one or two young survive to fledge in about three months. Every day the mountains were shrouded by cloud but about noon on their last day the wind shifted, the clouds lifted and that afternoon over 500 Golden Eagles flowed through. Please view our observation sites’ pages for more information: Sep 20 – Nov 15, Spring Migration Count A little geology helps to answer this. The eastern Rockies in Alberta were formed from layers of hard and soft sedimentary rock which were folded and thrust up by great pressure from the south-west. Salluit: This eagle summers on the banks of the Hudson Strait in northern Quebec and winters on the Eastern Shore of Maryland in the Chesapeake Bay.