Ecology and behavior of cowbirds and their impact on host populations

S. K. Robinson, S. I. Rothstein, Margaret Brittingham-Brant, L. J. Petit, J. A. Grzybowski

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Cowbirds of the genus Molothrus are brood parasites that lay their eggs in the nests of other (host) species. Because many hosts raise cowbird young instead of their own, brood parasitism can substantially reduce host breeding productivity, and high levels of brood parasitism can threaten some host populations. Population declines and the endangered status of several species have been linked to high levels of cowbird parasitism. Neotropical migrant landbirds may be particularly vulnerable to cowbird parasitism, especially in landscapes where cowbird feeding habitat has been created or enhanced by human activities and cowbird numbers are high. The purpose of this chapter is to review the natural history of North American cowbirds with special emphasis on the brown-headed cowbird, their effects on host population dynamics, and to identify the areas where research is most needed.

Original languageEnglish (US)
Title of host publicationNCASI Technical Bulletin
PublisherNCASI
Number of pages1
Volume2
Edition781
StatePublished - May 1 1999

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Population dynamics
Ecology
Productivity
ecology
brood parasitism
parasitism
population decline
population dynamics
nest
parasite
human activity
breeding
Parasites
egg
productivity
habitat
history

All Science Journal Classification (ASJC) codes

  • Media Technology
  • Environmental Science(all)
  • Industrial and Manufacturing Engineering

Cite this

Robinson, S. K., Rothstein, S. I., Brittingham-Brant, M., Petit, L. J., & Grzybowski, J. A. (1999). Ecology and behavior of cowbirds and their impact on host populations. In NCASI Technical Bulletin (781 ed., Vol. 2). NCASI.
Robinson, S. K. ; Rothstein, S. I. ; Brittingham-Brant, Margaret ; Petit, L. J. ; Grzybowski, J. A. / Ecology and behavior of cowbirds and their impact on host populations. NCASI Technical Bulletin. Vol. 2 781. ed. NCASI, 1999.
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Robinson, SK, Rothstein, SI, Brittingham-Brant, M, Petit, LJ & Grzybowski, JA 1999, Ecology and behavior of cowbirds and their impact on host populations. in NCASI Technical Bulletin. 781 edn, vol. 2, NCASI.

Ecology and behavior of cowbirds and their impact on host populations. / Robinson, S. K.; Rothstein, S. I.; Brittingham-Brant, Margaret; Petit, L. J.; Grzybowski, J. A.

NCASI Technical Bulletin. Vol. 2 781. ed. NCASI, 1999.

Research output: Chapter in Book/Report/Conference proceedingChapter

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Robinson SK, Rothstein SI, Brittingham-Brant M, Petit LJ, Grzybowski JA. Ecology and behavior of cowbirds and their impact on host populations. In NCASI Technical Bulletin. 781 ed. Vol. 2. NCASI. 1999