 Complete the following phrase:  Berthas Beach Important Bird Area comprises 3300 ha of coastal wetlands at the entrance to Choiseul Sound, on the east coast of East Falkland, in the Falkland Islands. It lies about 8 km south-east of Mount Pleasant Airport and 40 km south-west of Stanley. It has been identified by BirdLife International as an Important Bird Area IBA because of its significancer for a variety of migratory waders and other waterbirds. Overlapping it is the 4000 ha Berthas Beach 