I have a list that contains 2 columns. The first one is full name and the second one is birthday. It is possible to do new calendar list and put there the birthdays from the other list? Thanks.
You can do this just adding the Look up column in the Calendar list, which will pull the Birthday column for the list and display in calendar.
here is detail who you can do this(they use the task list but you do it according to your need). http://tutorial.programming4.us/windows_server/sharepoint-2010---working-with-lookup-columns-in-document-libraries-(part-1).aspx
Firstly, you have to create a Calendar View for the First List having birthdays.
Then you can use the concept of 'Calendar Overlay' to achieve your requirement.