Photomicrographs from a European Starling

Photomicrographs from a European Starling (Sturnus vulgaris) that was euthanized in the District of Columbia, USA. (A) There is an area in the brain with abundant acute hemorrhage (H) surrounding blood vessels and in the neuropil. H&E stain. (B) There are multifocal infiltrates in the neuropil of inflammatory cells (arrows) and rare multinucleated giant cells (arrowhead). H&E stain. (C) Inflammatory infiltrates consist of heterophils, macrophages, and glial cells. Admixed with the inflammation are poorly staining to light brown fungal hyphae (arrows). H&E stain. (D) Many fungal hyphae with parallel walls and acute angle branching (arrow) are highlighted by GMS staining.