Depends on what your view on monogamy is? In birds that many are monogamous for a single nesting (House Wrens), an entire breeding season (most bird species, including most passerines), several successive breeding seasons (observed in some pairs of American Robins, Tree Swallows, Mourning Doves, etc.), or life (albatrosses, petrels, swans, geese, eagles, and some owls and parrots).\n\nThat said many scientist believe that "In avoiding extinction, it pays to be promiscuous".
What animal species are monogamous?