Figure 2 in The Black Sea-Eastern Mediterranean flyway of the globally threatened European turtle dove (Streptopelia turtur)

Figure 2. Turtle dove sightings (1900–2020) during wintering periods (black square) and postbreeding migration periods (gray circle), as recorded with citizen science. The scale of grays: density of recovery lines for the Eastern flyway (left) and the Black SeaEastern Mediterranean flyway (right). Black lines: direction of recovery lines for ringed birds from the Eastern and Black Sea-Eastern Mediterranean flyways.