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/ (
Link)
@rjq and @maxkirsch - can you advise here. Is a retroactive split necessary here? I see that the range of Ceyx erithaca 2623 is wrong. But we can update the range (e.g. with the one on Ceyx erithaca 850880)
but a retroactive split would only be necessary to deal with obs ID'd as Ceyx erithaca 2623 what should have been split off as Ceyx rufidorsa 72646
Clements says Ceyx erithaca is "partially migratory, wintering to the southern Thai-Malay Peninsula and Sumatra" - so are those obs from there obs that should be split off as Ceyx rufidorsa, or are they just migratory Ceyx erithaca?
I guess I'm asking whether we need to split here or whether we can just let IDers sort out confusion between sympatric Ceyx erithaca and Ceyx rufidorsa south of the Isthmus of Kra?