Podos measured finch beak depth and correlated this with characteristics of their songs. Using the figure below what species of bird with a vocal constraint between 2 and 3 has the largest beak depth?





A. G. magnirostris

B. C. psittacula

C. G. fortis

D. G. scandens

E. C. pallidus


C. G. fortis

Biology & Microbiology

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