You probably have the old version of the Google Calendar. You can see that if when you go to the calendar, and hover over with the mouse, you see the following description on the Burman Events Calendar (Burman Events -Deprecated):
You are having the old version of the Burman Calendar. To update to the new one is very simple.
1) Go to the calendar view (calendar.google.com) and remove the old Burman Calendar (the one that says deprecated). Select the triangle on the right, and select the option to "Hide this calendar from the list"
2) On the "others calendar", there is a little dialog that says: Add a coworker's calendar.
3) Copy the following link (looks like an email address) and paste inside that input box
cauc.ca_3932393534383230383335@resource.calendar.google.com
cauc.ca_3932393534383230383335@resource.calendar.google.com
and press enter.
4) Calendar will show. You can customize color and other settings