On 11 April 2013 a Meyer's Parrot was seen in a large baobab tree on the edge of the floodplain of the Okavango River in the Mahango area of the Bwabwata National Park in monad 1812S, 2144E. The bird drew our attention by its raucous screeching. It was soon apparent that there was a second bird calling in an un-melodious duet, but we could not locate it. After some time we traced the call to the vicinity of a scar some 9m up and on the side of one of the large branches of the baobab. The scar was probably where a branch had broken off leaving a cavity. The cavity had been closed over with mud pellets by a swallow - typical of a Mosque Swallow Hirundo senegalensis, to create a nesting site. After some 10 minutes the nesting parrot emerged from the cavity and both birds vocalized together for a few minutes while hanging onto the scar just below the mud wall of the nest before the nesting bird re-entered its nest. It did not re-emerge for the next 20 minutes that we remained in the area.