Extended Data Fig. 3: Posterior estimates for (A) SI βIDX (Eq. 6), (B) SI γIDX (Eq. 11), and (C) SI θIDX (Eq. 11), denoting the change in size index for each species per 10 years, 10 degrees latitude, and 1000 m elevation, respectively.
From: Abiotic conditions shape spatial and temporal morphological variation in North American birds

Points represent the posterior medians, while thick and thin lines represent the 50% and 89% credible intervals, respectively. The dashed grey line represents zero in all cases.