Global bird protection plans only overlap with local ones about 4% of the time, so we're missing the unique birds in our own backyards.
March 26, 2026
Original Paper
Scale dependence of avian functional rarity reveals mismatches between global and local conservation priorities
EcoEvoRxiv · 10.32942/X2X37P
The Takeaway
Conservationists usually prioritize saving areas based on global maps of species with unique traits or small ranges. This study of over 10,000 bird species found that the birds performing the most specialized roles in a local ecosystem are almost never the same ones considered rare globally, resulting in a near-total mismatch between international and local protection priorities.
From the abstract
Aim. Spatial scale shapes both how rarity is defined and how conservation priorities are derived from it, yet most functional rarity assessments rely on a single (often global) reference pool. We test how the scale dependence of functional rarity affects hotspot identification and the alignment of global versus local conservation priorities in birds. Location. Global. Time period. Contemporary. Major taxa studied. Birds (10,906 species). Methods. Using AVONET morphological traits and global dist