Checklist_Spring Birding tour in Romania
List of Butterflies of Bulgaria, 2017
Checklist of Butterflies of Bulgaria Tour
Checklist_Winter Birding in Northern Greece Tour
Checklist_Spring Birding in Northern Greece Tour
Woodpeckers, Owls and Grouse Tour Checklist
Winter Birding Tour Checklist
Wallcreeper Tour Checklist
Red-breasted Goose Tour