Monotypic.
Plumage varies, breeding (MAR-SEP) has a sleek black coloration around head/neck while non-breeding (OCT-FEB) is greyer on head/neck.
M/F similar.
★★☆☆☆ · 2026-05-23 · US-IA · 1105×1105 (429×166) · ISO 1000 · Canon EOS R8
Floating · Eye · Breeding
★★☆☆☆ · 2024-02-17 · US-VA · 1034×1034 (359×129) · ISO 8000 · Canon EOS R8
Floating · Non-breeding