Influence of forest canopy closure on the rate of bird predation on overwintering monarch butterfliesv. 85Applied Science Publishers Oxford; Elsevier151–159
Alonso, Alfonso, Montesinos-P., E., Rendon-S., E., and Brower, L. P. 1998. "Influence of forest canopy closure on the rate of bird predation on overwintering monarch butterflies." Biological Conservation, 85 151–159.