J. P.  McCarty and Winkler, D. W., ?Foraging ecology and diet selectivity of Tree Swallows feeding nestlings?, Condor, vol. 101, pp. 246-254, 1999.

J. P.  McCarty and Winkler, D. W., ?Relative importance of environmental variables in determining the growth of nestling Tree Swallows Tachycineta bicolor?, Ibis, vol. 141, pp. 286-296, 1999.