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Villard, Pascal; Cuisin, Jacques (2004). "How do woodpeckers extract grubs with their tongues? A study of the Guadeloupe woodpecker (Melanerpes herminieri) in the French Indies". Auk. 121 (2): 509–514. doi:10.1642/0004-8038(2004)121[0509:HDWEGW]2.0.CO;2. S2CID86781719.