Some Remarks on Bird's Brain and Behavior under the Constraints of Domestication

<table>Different breeds of chicken with modifications of plumage. (a) Crested Polish chicken with feather crest. (b) Silky chicken with hair-like feathers. (c) Japanese Bantam with curly feathers. (d) Ohiki cock with elongated tail feathers.</table>

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Figure 1

Figure 1: Some Remarks on Bird's Brain and Behavior under the Constraints of Domestication 