This Cocoa (formerly Buff-throated) Woodcreeper (Xiphorhynchus sussurans (formerly lumped in with X. guttatus)) was our alarm clock at Manuel Antonio (Costa Rica) - he sings the first parts over and over and over every 6 seconds for 30+ minutes in the morning, occasionally including the "churrs". Woodcreepers are some of those notoriously difficult to identify by sight birds, but each has it's unique song.
To cite this page:
Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2014. The Animal Diversity Web (online). Accessed at http://animaldiversity.org.
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