Great Grey Owl (Strix nebulosa) [XC424002]
by Patrik \u00c5berg from V\u00e4stra G\u00f6talands l\u00e4n, Sweden (alarm call)
Great Grey Owl (Strix nebulosa) [XC740419]
by Oriental Stork from Hiue, Pohjois Ii, Finland (bill slams (in nestbox))
Subspecies
Population from Kentei Mts, in northern Mongolia has been separated as subspecies elisabethae, but doubtfully separable from lapponica.
The following 2 subspecies are recognised:
nebulosa Forster, 1772 - North America, from central Alaska east to south-western Quebec, south to east-central California, northern Idaho and north-eastern Minnesota.
lapponica Thunberg, 1798 - Eurasia, from Fenno-Scandia east to western Koryakland, south to Lithuania, northern Mongolia, north-eastern China and northern Sakhalin.