European green woodpecker lower black border to the moustache. Juveniles are spotty and streaked all over; the moustache is dark initially, though juvenile males can show some red feathers by early June or usually by July or August. Moult takes place between June and November with the first flight feathers being lost around the time the young fledge. Juveniles moult quickly after fledging and gain their adult plumage between August and November. Although the European green woodpecker is shy and wary, it is usually its loud calls, known as yaffling, which first draw attention. It 'drums' rarely (a soft, fast roll), but often
Kaempfer's woodpecker red malar and mottling on its crest. For comparison, the rufous-headed woodpecker is larger and has extensive black barring on the back and underparts. Little is known about its habitat preference, but it appears to be associated with bamboo (specifically "Guadua paniculata") growing in Cerrado and babassu palm forest; very unlike the humid forest and woodland where the related rufous-headed woodpecker is found. There is no evidence to suggest that it occurs in Caatinga. Rather, the authors who proposed the common name Caatinga woodpecker and association it with the caatinga habitat mistook a place in the caatinga called Uruçuí-Una for