MDI Birds
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    Evening Grosbeak / Hesperiphona vespertinus

    : Bred annually in small numbers late 1970s into the early 1990s but no confirmed breeding since. early Jun-late Aug, usually single males

    : Typically and mid Oct-late May with from early Oct, but sometimes and as in 2025-2026. When present, individuals to good sized flocks often appear at bird feeders.

    Miscellany: Evening Grosbeaks have an interesting history. Until the mid 19th century, they were largely limited to the Rocky Mountains and Western Canada. They were unrecorded in Maine and New England generally until late in the century. From the 1920s until the mid 1980s Evening Grosbeaks were a regular though highly variable feature of our winters. Number declined into the mid 1990s and since then Evening Grosbeaks have been scarce or absent. Between 1954 and 1995, Evening Grosbeaks were detected on all but two of the MDI Christmas Bird Counts with count totals often in the hundreds. Since that time, they've been recorded fewer than five times. The Schoodic shows a similar pattern. During the period of peak movements, some birds remained east to breed.

    The eastern expansion was widely considered to be the result of the planting of Box Elders throughout the Great Plains as windbreaks and in the Northeast as ornamentals. Box Elders hold their seed all providing food. Birdfeeders with sunflower seeds, perhaps especially in the populated northeast, may have been important as well. Some think that spruce budworm outbreaks especially in the last half of the 20th century provided food and supported those individuals that remained to breed. That said, it isn't clear why the species has declined so dramatically since the mid 1980s.

    Last Reviewed: June 6th, 2026