blåmaskestork Ciconia abdimii

A medium-sized, dark stork with a white belly. This gregarious African migrant often appears in huge nomadic flocks numbering in the thousands, normally in response to heavy rains or large fires, after which they forage on insect emergences. It prefers open grassland and woodland but also uses wetland margins and fields. Could be confused with the more solitary Black Stork, but Abdim’s Stork is smaller, has a white rump, and has a green-gray (not red) bill and dull (not bright red) legs.