Common Loon Sounds, All About Birds, Cornell Lab of Ornithology

Common loon #Bird The common #loon or great northern diver (Gavia immer) is a large member of the loon, or diver, #family of birds. #Breeding #adults have a plumage that includes a broad black head and neck with a greenish, purplish, or bluish sheen, blackish or blackish-grey upperparts, and pure white underparts except some black on the undertail coverts and vent. Non-breeding adults are brownish with a dark neck and head marked with dark grey-brown. Their upperparts are dark brownish-grey with

Step up to the mic and try your hand, or voice, at loon calling

The common loon is, without doubt,... - Center for Wildlife