Most species formerly in Picoides are now in Dryobates (along with a couple former Dendrocopos and all former Veniliornis); only the three-toed woodpeckers remain in Picoides.
Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/ (連結)
OK I atlased Picoides (sensu stricto) - essentially US Canada and Eurasia. I didn't atlas Dryobates because doing so won't really help with IDs. I also moved the Picoides species from Picoides (sensu lato) to Picoides (sensu stricto) - now committing.
Very interesting - I didn't know that had happened. Do you have a reference as to why this split was made? Just for my own understanding. I find vertebrate taxonomy often hard to penetrate.
OK I atlased Picoides (sensu stricto) - essentially US Canada and Eurasia. I didn't atlas Dryobates because doing so won't really help with IDs. I also moved the Picoides species from Picoides (sensu lato) to Picoides (sensu stricto) - now committing.