Administrators are users who have access to special pages, functions, and abilities. Bureaucrats have the ability to give users certain privileges, and can make other users administrators, chatmoderators, and rollbackers.
For you to become an administrator, someone with bureaucrat access must make you one. On the Angry Birds Wiki, you can request adminship by asking an active bureaucrat via their talk page. However, not just anyone can be an administrator. Users who are trusted here and have had the most experience editing here may request adminship if there aren't many active staff members.
If there are no active bureaucrats, but there is an active community, use the "Requests for adminship" page or start a blog post titled "Nominations for Adminship" to nominate users to become admins or bureaucrats. Once a community decision has been reached please leave a message at the wiki adoption requests page and Wikia Staff can provide the rights.
Administrators should not use their administrator powers to settle editing disputes; for example, to lock a page on a version he or she prefers in an editing dispute that isn't vandalism. Administrator powers should be used to help keep the wiki clear of vandalism, spam, and users who make malicious edits, but not for simple disagreements between users acting in good faith. Ideally an admin shouldn't be considered "in charge". The ideal admin is just someone who is trusted to have a few extra buttons and to use them for the benefit of the Wikia community.
The admin should also refrain from affiliating with other Wikis unless every admin is with the idea.