Monotypic.
Plumage varies, breeding has black head while non-breeding is white-grey with a darker/blackish spot by the "ear". Juvenile is different over first two years.
M/F similar.
★★★★☆ · 2024-11-03 · IE-L · 2498×2498 (2423×1411) · ISO 3200 · Canon EOS R8
Vocalizing · Juvenile
★★★★☆ · 2024-11-03 · IE-L · 2519×2519 (2028×2368) · ISO 4000 · Canon EOS R8
BIF · Non-breeding
★★★★☆ · 2024-11-03 · IE-L · 2483×1655 (850×806) · ISO 6400 · Canon EOS R8
Playing · 2J · Juvenile