Mechanisms of call note-type perception in black-capped chickadees (Poecile atricapillus): peak shift in a note-type continuum
Journal of Comparative Psychology (2010) - Comment
pubmed: 20175601  doi: 10.1037/a0017741  issn: 1939-2087  issn: 0735-7036 

Lauren M. Guillette, Tara M. Farrell, Marisa Hoeschele, Carly M. Nickerson, Michael R. W. Dawson, Christopher B. Sturdy