Brain Size and Morphology of the Brood-Parasitic and Cerophagous Honeyguides (Aves: Piciformes)
Original Paper Brain Behav Evol Received: August 2, 2012 DOI: 10.1159/000348834 Returned for revision: September 9, 2012 Accepted after second revision: February 10, 2013 Published online: April 24, 2013 Brain Size and Morphology of the Brood-Parasitic and Cerophagous Honeyguides (Aves: Piciformes) e b a, c Jeremy R. Corfield Tim R. Birkhead Claire N. Spottiswoode e d f Andrew N. Iwaniuk Neeltje J. Boogert Cristian Gutiérrez-Ibáñez g f g Sarah E. Overington Douglas R. Wylie Louis Lefebvre a DST/NRF Center of Excellence, Percy FitzPatrick Institute, University of Cape Town, Cape Town , South Africa; b c Department of Animal and Plant Sciences, University of Sheffield, Sheffield , Department of Zoology, d University of Cambridge, Cambridge , and School of Biology, University of St. Andrews, St. Andrews , UK; e f Department of Neuroscience, University of Lethbridge, Lethbridge, Alta. , Center for Neuroscience, g University of Alberta, Edmonton, Alta. , and Department of Biology, McGill University, Montreal, Que. , Canada Key Words fers greatly between honeyguides and woodpeckers. The Brain size · Brood parasitism · Hippocampus · Piciformes · relatively smaller brains of the honeyguides may be a conse- Volumetrics quence of brood parasitism and cerophagy (‘wax eating’), both of which place energetic constraints on brain develop- ment and maintenance. The inconclusive results of our anal- Abstract yses of relative HF volume highlight some of the problems Honeyguides (Indicatoridae, Piciformes) are unique among associated with comparative studies of the HF that require birds in several respects. All subsist primarily on wax, are further study. Copyright © 2013 S. Karger AG, Basel obligatory brood parasites and one species engages in ‘guid- ing’ behavior in which it leads human honey hunters to bees’ nests.
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