Hyman, J., Hughes, M. (2006) Territory owners discriminate between aggressive and non-aggressive neighbours.  Animal Behaviour. 72: 209-215.

      Hyman J. (2005) Seasonal variation in response to neighbours and strangers by a territorial songbird.  Ethology, 111: 951-961.

      Hyman, J., Hughes, M., Searcy, W.A., Nowicki, S. (2004) Individual variation in the strength of territorial defense in male song sparrows:  Correlates of age, territory tenure, and neighbor aggressiveness.  Behaviour. 141:15-27.

      Ballentine, B., Hyman, J., Nowicki, S. (2004) Vocal performance influences female response to male bird song: an experimental test.  Behavioral Ecology. 15:163-168.

      Hyman, J. (2003) Countersinging as a signal of aggression in a territorial songbird.  Animal Behaviour.  65:1179-1185.

      Hyman J. (2002) Conditional strategies in territory defense: Do Carolina wrens play tit-for-tat?  Behavioral Ecology.  13: 664-669.

      Hyman, J. & Pruett-Jones, S. (1995) Natural History of the Monk Parakeet in Hyde Park, Chicago.  Wilson Bulletin of Ornithology. 107: 510-517.

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