""Females of the southern race of White-fringed Antwren are orange below and have an orange supercilum. This form also has a repetitive chump-chump-chump song, quite unlike northern races, and is sometimes separated as Southern White-fringed Antwren F. grisea, with the northern subspecies becoming Northern White-fringed Antwren F. intermedia. The southern form is associated with scrubby bushes on white sandy soils, and occurs south and east from southeastern Colombia and southernmost Venezuela."" en.wikipedia.org/wiki/White-fringed_Antwren f/5.6, iso 800, exp comp plus one and one-third, 1/160.