Is this Zimmer's Woodcreeper or Straight-billed Woodcreeper? The HBW illustration of the north Amazonian Straight-billed shows the head and neck feathers white vs. buff on Zimmer's. The eye-ring of Zimmer's is illustrated as yellow. ProAves writes that Zimmer's has a black head, but HBW illustrates the Straight-billed with a black head. Zimmer's Woodcreeper is found only in the varzea (flooded) forest along the Amazon river and some of its tributaries, which is where this bird was seen.
Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
PAL
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)
