Preserve Dockyard in Borderlands 2
Preserve Dockyard is an area in Borderlands 2, inside the Shipping Yard
You get sent there in the mission Wildlife Preservation
Upon entering the Preserve Dockyard, Mordecai tells you that Bloodwing should be in the holding cells at the other end of the facility. You find her, you'll find your claptrap upgrade.
Casa De Mordecai
Natural Selection Annex