The Rook (Corvus frugilegus) is a member of the Corvidae family in the passerine order of birds. Named by Carl Linnaeus in 1758...

Name-Hunting...

Wikipedia says:

"...Collective nouns for rooks include building, parliament, clamour and storytelling

And Neil Gaiman backs it up: http://journal.neilgaiman.com/2008/07/morning-found-me-miles-away.html