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White-fronted Tyrannulet (Acrochordopus zeledoni zeledoni) Range: MA, SA: Costa Rica to nw SA
Cerro Punta, Panama Some individuals are less streaked.
Split from the Rough-legged Tyrannulet which is found in southeast South America. Note small white forehead, grey head and thick yellow wing bars, and a pinkish lower mandible. Also note short bumpy sections on legs.