Every year from December to February thousands of bald eagles come to Cheakamus Valley, near Brackendale, to feast on dead or dying salmon. The highest concentration of eagles runs from mid-December to mid-January. This is the time when their numbers are checked. On the first Sunday of the New Year lots of volunteers come to count eagles and watch for activity. The official winter home for the bald eagles is a small community of Brackendale. The best place to watch thousands of birds is at Eagle Run, this is a special viewing facility on the municipal dyke along Government Road.
A little closer to Vancouver is Boundary Bay Regional Park, which is also a good spot for watching these birds. This annual event draws lots of people from various countries to become volunteers and take part in counting. To become a volunteer you don't need any prior experience—just you own desire, warm clothes, and a pair of binoculars.
Besides the eagle count, you can attend some eagle and salmon related events such as the Fraser Valley Bald Eagle Festival. It takes place on the third weekend of November in the town of Mission, B.C.