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
Eastern Olivaceous Warbler Iduna pallida Olive-tree Warbler Hippolais olivetorum 1 0 1
Willow Warbler Phylloscopus trochilus Common Chiffchaff Phylloscopus collybita 1 0 1