Confused pairs

Incorrect answers between two species (undirected). With a country selected, only mix-ups from games in that country are counted, and only pairs where both species are on that country's checklist are shown.

Species A (lower id) Species B (higher id) Total wrong A was target → picked B B was target → picked A
Ruddy Shelduck Tadorna ferruginea Common Shelduck Tadorna tadorna 1 1 0
Eurasian Wigeon Mareca penelope American Wigeon Mareca americana 1 1 0
Elegant Tern Thalasseus elegans Royal Tern Thalasseus maximus 1 1 0