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Photographs from red crossbills and American goldfinches from Montana

Detailed Description

Photographs from red crossbills (Loxia curvirostra; A, C) and American goldfinches (Spinus tristis; B, D) from Montana, U.S.A. (A) A large yellow/tan plaque (asterisk) is present on the mucosal surface of the crop. (B) White seed-like plaques (arrow) are present on the mucosal surface of the crop. (C) Numerous tan nodules (arrow) are present throughout the spleen. (D) A single tan focus (arrowhead) is present on the hepatic surface.

Sources/Usage

Public Domain.