Extended Data Fig. 6: Allele frequency shifts within San Diego at climate-linked loci located near genes associated with avian thermal tolerance and bill morphology.

Number of loci linked to (A) monthly mean dew point temperature (n = 20), (B) monthly precipitation (n = 10), and (C) monthly maximum temperature (n = 7) in willow flycatchers breeding in San Diego that shifted in a direction consistent with climate adaptation. The p-values show the results for one-tailed binomial tests examining whether the observed proportion of loci that shifted in the expected direction (that is, consistent with climate adaptation) was significantly greater than expected by chance.