Here’s an example of the information you’ll get from a search of this database which is new to Ancestry. It’s a basic index.
There’s the same data at the Archives of Alberta site, with additional births registered up to 1903, at https://provincialarchives.alberta.ca/how-to/find-birth-marriage-and-death-records/birth-indexes . There you need to select the first letter of the surname, then scroll through the index, some hand written, to find the year the person was born in order to locate their name and registration number. Then order a digital copy of the full records delivered by email for $5.25.
Ancestry provides a more flexible search — by first name or birth place if that’s all you know.You still have to order through the Archives of Alberta site to get the full information.