Buzzard
From Destiny 1 Wiki
Buzzard is a Destiny Error Code
The Solution: You aren't logged in or don't have Xbox Live Gold or PlayStation Plus, which is required for certain activities .Ensure you're logged in to an account with Xbox Live Gold and PlayStation Plus (or subscribe, if you don't have an existing membership).I f you're playing on Xbox 360, an Xbox Live Gold trial will not suffice; you'll need a proper subscription in order to play.