Amato, K.R., S.L. Emel, C.A. Lindgren, K.M. Sullan, P.R. Wright, and J.J. Gilbert. 2008. Covering behavior of two co-occurring Jamaican sea urchins: differences in the amount of covering and selection of covering material. Bulletin of Marine Science 82: 255-261.

Kehas, A. J., Kathleen A. Theoharides, and J. J. Gilbert. 2005. Effect of sunlight intensity and albinism on the covering response of the Caribbean sea urchin Tripneustes ventricosus. Marine Biology 146:1111-1117.

Gerhardt, F. and Edward H. Taliaferro. 2003. Density-dependent patch selection by foraging cattle egrets. Waterbirds 26:364-369.

Twining B.S., J.J. Gilbert, and N.S. Fisher. 2000. Evidence of homing behavior in the coral reef mysid Mysidium gracile.  Limnology and Oceanography 45: 1845-1849.