A White-plumed Antbird (Pithys albifrons)
When I could get away from the administration of the Biological Dynamics of Forest Fragments Project, my main research dealt with the ecology of understory birds in our experimental forest patches. With the help of hordes of field interns, I amassed a data set based on more than 50,000 mist-net captures of over 170 species of birds. My published work from these studies deals with the response of forest understory birds to habitat fragmentation, as well as the basic biology, natural history, taxonomy, and distribution of both understory and canopy species. Two "finds" were especially excitingthe first nest of the Crested Eagle (Morphnus guianensis) and an undescribed population of antbirds which led us to elevate a subspecies formerly considered a race of the Dusky Antbird (Cercomacra tyrannina) to full species level, which we named Willis Antbird (Cercomacra laeta).
Bierregaard, R. O., Jr. 1982. Levantamentos ornitolˇgicos no dossel da mata pluvial de terra firme. Supl. Acta Amaz˘nica 12(3):107-111.
Bierregaard, R. O., Jr., D. F. Stotz, L. H. Harper, and G. V. N. Powell. 1987. Observations on the occurrence and behavior of the Crimson Fruit Crow (Haematoderis militaris), in central Amazonia. Bull. Brit. Ornith. Club 107:134-137.
Bierregaard, R. O., Jr. 1988. Morphological data from understory birds in terra firme forest in the Central Amazonian basin. Rev. Bras. Biol. 48(2): 169-178.
Bierregaard, R. O. Jr. and T. E. Lovejoy. 1988. Birds in Amazonian forest fragments: Effects of insularization. In: Ouellet, H., ed., Acta XIX Cong. Int. Ornith., Vol II. Univ. of Ottawa Press, Ottawa. pp. 1564-1579.
Bierregaard, R. O., Jr. and T. E. Lovejoy. 1989. Effects of forest fragmentation on Amazonian understory bird communities. Acta Amaz˘nica 19: 215-241
Stoz, D. F. and R. O. Bierregaard, Jr. 1989. The birds of the fazendas Porto Alegre, Dimona and Esteio north of Manaus, Amazonas, Brazil. Rev. Bras. Biol. 49(3): 861-872
Bierregaard, R.O., Jr. 1990. Avian Communities in the Understory of Amazonian Forest Fragments. In: A. Keast an J. Kikkawa, eds. Biogeography and Ecology of Forest Bird Communities. SPB Academic Publishing, The Hague. pp. 333-343.
Bierregaard, R. O., Jr. 1990. Species composition and trophic organization of the understory bird community in a Central Amazonian terra firme forest. In A. Gentry, ed. Four Neotropical Rainforests. Yale Univ. Press. New Haven. pp. 217-236.
Karr, J. R., J. Blake, S. Robinson, and R. O. Bierregaard, Jr. Birds of four neotropical forests. 1990. In A. Gentry, ed. Four Neotropical Rainforests. Yale Univ. Press. New Haven. pp. 237-269.
Stotz, D. F., R. O. Bierregaard, Jr., M. Cohn-Haft, P. Peterman, J. Smith, A. Whittaker, and S. V. Wilson. 1992. The status of North American migrants in the Central Amazonian Brazil. Condor 94: 608-621.
Stouffer, P. C., and R. O. Bierregaard. 1993. Seasonal rainfall patterns and the abundance of Ruddy Quail-doves (Geotrygon montana) near Manaus, Brazil. Condor 95:896-903.
Stouffer, P. C., and R.O. Bierregaard, Jr. 1995. Effects of forest fragmentation on understory hummingbirds in Amazonia, Brazil. Conservation Biology 9:1085-1094.
Stouffer, P. C., and R.O. Bierregaard, Jr. 1995. Use of Amazonian forest fragments by understory insectivorous birds. Ecology 76:2429-2443.
Stouffer, P. C., and R. O. Bierregaard, Jr. 1996. Forest fragmentation and seasonal patterns of hummingbird abundance in Amazonian Brazil. Ararajuba 4:9-15.
Bierregaard, R. O., Jr., and P. C. Stouffer. 1997. Understory birds and dynamic habitat mosaics in Amazonian rainforests. In W. F. Laurance and R. O. Bierregaard, Jr., editors, Tropical Forest Remnants: Ecology, Management and Conservation of Fragmented Communities. Univ. Of Chicago Press, Chicago, IL, USA.
Bierregaard, R. O., Jr., M. Cohn-Haft, and D. F. Stotz. 1997. Cryptic biodiversity: An overlooked species and new subspecies of Antbirds (Aves: Formicariidae) with a revision of Cercomacra tyrannina in northeastern South America. Ornith. Mongr. 48: 111-128.