"Obligatory Seagull" ... and Gang

Well here they all are, out looking for trouble ...
"Obligatory Seagull" is leading the bunch, with "Compulsory Seagull", "Mandatory Seagull", "Necessary Seagull", "Essential Seagull" and "Required Seagull" following closely behind ... "Statutory Seagull" and their French cousin, "Mouette Obligatoire" are both keeping a lookout from above and behind ...
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"There's that nutter with the camera who owes us a fortune in royalties," cries Statutory Seagull from above. "On the count of five let's give him some expletive removed..."