{"fact":"Despite strong mate preference within their own color morph, carrion and hooded crows can still interbreed, creating a fascinating mix of genetic combinations in their offspring.","context":"Individuals differing most extremely in appearance (i.e. pure hooded crows with genotype LLll vs. pure carrion crows with genotypes DDdd, DDdl or DDll) were only 61 % as likely to choose each other for reproduction compared to pairs of individuals of equal phenotypes.","source":"Dirk Metzler; Ulrich Knief; Joshua V. Peñalba; Jochen B. W. Wolf, Assortative mate choice and epistatic mating-trait architecture induce complex movement of the crow hybrid zone, 10.1101/2020.03.10.985333","index":564}