wha-wha-wha
Rapid notes on one pitch
Slow and fast versions (Ritchison 1983)
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Yank/Quank call
Nasal sound
Single note or 2 quick notes in succession
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References:
Grubb Jr., T. C. and V. V. Pravosudov (2020). White-breasted Nuthatch (Sitta carolinensis), version 1.0. In Birds of the World (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.whbnut.01
Ritchison, G. (1981a). Breeding biology of the White-breasted Nuthatch. Loon 53:184-187.