• Webster's Revised Unabridged Dictionary
    • n Burion (Zoöl) The red-breasted house sparrow of California (Carpodacus frontalis); -- called also crimson-fronted bullfinch.
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Century Dictionary and Cyclopedia
    • n burion A name of the house-finch, Carpodacus frontalis, an abundant and familiar fringilline bird of the southwestern United States, almost domesticated in the towns. It resembles the common purple finch, C. purpureus, but is smaller, with a stouter bill and more vivid crimson-red markings, which are restricted to definite areas on the head, back, and breast.
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In literature:

Burion's Parliamentary Diary, 393.
"Notes & Queries, Volume 2, May-December, 1850, Index" by Various