Caon,
Hope the following helps. Information is from 2012 when I last lived there.
Some very good information is in the following website:
Nature Calgary
Calgary - Gray Partridge - I used to see them Downtown in a park behind apartments opposite from Prince's Island Park. Access is via 4th St SW. Stay on south side of river and walk west looking between apts and river.
For Great Gray Owl the Water Valley Area is best. See site link for
Water Valley. Take the Grand Valley Road up to Water Valley and return via Horse Creek Road.
For Boreal Owl, if heard only is OK, take the Sibald Creek road after dark. I would often use this return to Calgary after birding the Kananaskis Valley. Often 4 species of owl (including N Saw Whet) could be heard on a good evening.
WT Ptarmigan are tricky near Calgary. In winter they come down into valleys and in spring they go up to the alpine meadows. The best place used to be in the valley just north side of the parking area at Highwood Pass (HWY 40 Kananaskis). In spring they head up the slope on south side of same parking area to
Ptarmigan Cirque.
They are also found in the valley on the Icefields Parkway (Lake Louise to Jasper) in the area around the Num Ti Ja lodge.
For Gray crowned Rosy Finch the easiest area was some feeders in Exshaw. I believe the feeders that were on Barrier Mountain Drive have been taken down but maybe someone else has started. No idea. The other area is Sunshine Meadows but not sure about when exactly they return there to breed.
For Dusky Grouse the best place was Sheep River Provincial Park on the Foran Grade trail up to where it intersects the Windy Point trail.
For other Species try
Nature Calgary's Species Locator
When heading to the mountains remember the bears will be waking up in April!