Bradfield's Swift vs Little Swift

Bradfield's Swift and Little Swift can be distinguished primarily by their tail shape and plumage. Bradfield's Swift has a more deeply forked tail, while Little Swift's tail is more square or slightly notched. Both species are similar in size and overall dark plumage.

Look for the tail shape: Bradfield's Swift has a more deeply forked tail compared to the Little Swift's square or slightly notched tail. Check for the white rump patch, which is a key feature of the Little Swift.

Both species have dark plumage, but Bradfield's Swift may appear slightly darker overall. The Little Swift often shows a contrasting white rump, which is not present in Bradfield's Swift.