Two groups of common ravens are merging into a single species in a case of speciation reversal
An article published in the journal “Nature Communications” brings evidence of an speciation reversal in two lineages of the species common raven (Corvus corax). A team of researchers examined genomic data from hundreds of ravens collected in North America in a study begun in 1999 concluding that this species diversified into three genetically distinct groups: the species Chihuahua raven (Corvus cryptoleucus) emerged from one of them but two of them are collapsing into one by a hybridization process.