Apparently,
It was only in the early 1990s that it was discovered that A major route for eagle migration was along the Kananakis and Livingstone valleys.
http://eaglewatch.ca/the-eagles-jour...gle-migration/
I had seen this a few years ago near Savannah Creek. About 30 birds traveling very high and very fast south down the valley. It was kind of strange to see and I didn't really know what to make of it.
Interesting to note that First Nations people trapped eagles in the spring and and it is claimed that there are 8 known sites in the Oldman River basin.
Reference the The attached Theses by Kristina Hannis (SFU). Its a really interesting read regarding the Piikani timber limit 147B in the S.W. Porcupine Hills. (eagle trapping) click on the full text PDF to read it.
http://summit.sfu.ca/item/12201