Leck, C (1988). “Long-term changes in the breeding bird populations of a New Jersey forest”, Biological Conservation46, p. 145. doi:10.1016/0006-3207(88)90097-3.
Keller, J (2003). “An explanation of patterns of breeding bird species richness and density following clearcutting in northeastern USA forests”, Forest Ecology and Management174, p. 541. doi:10.1016/S0378-1127(02)00074-9.