In Scotland, Statutory certificates are available at ScotlandsPeople http://www.scotlandspeople.gov.uk/
This is a pay site but is quite reasonable compared to other countries. It cost £7 for 30 credits. You use one credit to view a page of search results (up to 25 entries) and 5 to view an image. Census images and Certificates are available immediately subject to time limits (100 for births, 75 for marriages and 50 for deaths). With a bit of luck you can get 5 certificates / census images.
Remember to run as wide a search as possible when looking - so long as the number of results is 25 or less it's still only one credit.
There are 3 William Skene's born in 1905 with one William J (but not in Kincardinshire). Running a search for William Skene born 1902 - 1908 anywhere in Scotland produces 18 records so you would expect him in among there. Once you have his birth, you get his parents.
Once you have his parents, you can find their marriage which gives their ages / parents and then continue backwards.
Statutory registration began in 1855. The LDS have Indexed many parish records (including some certificates 1855 - 1875) and can be searched for free. SP also have these records along with other's not Indexed by the LDS.https://familysearch.org/search/collection/list#page=1&c...
FreeCEN are Indexing census returns http://freecen.rootsweb.com/
The Index is incomplete so check what's available but for the north east of Scotland it appears complete for 1841 and pretty good for 1851. There is a free index to 1881 on SP as the LDS indexed it many years ago.
When did the family emigrate to Canada as it might just be possible to find them in 1911 (if they're there)