Blood smears, House Finch (Haemorhous mexicanus), illustrating white blood cell morphology and intracellular hemoparasites: Heterophil (3a, and intraerythrocytic hemosporidian immediately below), basophil (3b), eosinophil (3c), small lymphocyte (3d), medium lymphocyte (3e), and monocyte (3f). Intraerythrocytic hemosporidians (3g, 3h, white arrows) and Leucocytozoon sp. (3i, black arrow). Immature erythrocytes, with a basophilic cytoplasm and clumped nuclear chromatin are found in several images (blue arrows). Bar=20 µm.