Title: Biblio RTF Export
Author: Biblio 7.x

Shuman TW, Robel RJ, Kemp KE, Zimmerman JL. Time budgets of confined nothern cardinals and Harris' sparrows in flocks and differences in observer data. Journal of Field Ornithology. 1992;63:129 -137. doi:http://www.jstor.org/stable/4513677.