Photos / Sounds

Observer

mccreedy

Date

June 12, 2019 07:31 AM UTC

Description

Treatment in Cornell Birds of North America species account:

Variation in size only, with clinal increase from south to north (Cramp 1985a). No detailed studies on variation in size, if any at all, within North America.

Delimitation of the 3 weakly differentiated subspecies as recognized by Cramp (Cramp 1985a), and listed here, arbitrary because adjacent populations overlap in size and diagnosis apparently based only on average differences in size. Only 2 subspecies recognized by Ridgway (Ridgway 1919), but 3 subspecies maintained by Peters (Peters 1934b) and Am. Ornithol. Union (American Ornithologists' Union 1957), which lists nominate F. a. arctica as the North American breeding subspecies and both F. a. naumanni and F. a. grabae as having occurred in North America. See also Salomonsen 1944, Harris 1984b, and Harris and Birkhead 1985 .

F. a. arctica (Linnaeus, 1758). Low-arctic breeding distribution including all North American populations and also Iceland, Norway (north of Bergen), Bjørnøya., and w. Greenland. Medium size, averaging larger than smallest F. a. grabae, which often treated as synonym of nominate, and smaller with smaller bill than F. a. naumanni; wing averaging 162.9 mm, tail 48.4 mm, culmen 48.9 mm, bill at greatest depth 36.3 mm, tarsus 26.4 mm, middle toe 37.4 mm (n = 28; Ridgway 1919; also see Measurements, below, and in Cramp 1985a).

F. a. grabae Brehm, 1831. Breeds se. Atlantic, including Brittany, British Is., Faeroes, w. Sweden, and s. Norway; recorded as vagrant to Newfoundland (Am. Ornithol. Union American Ornithologists' Union 1957). Averages smaller than nominate F. a. arctica but overlap extensive, especially where ranges meet. Probably best treated as synonym with F. a. arctica following Ridgway (Ridgway 1919).

F. a. naumanni Norton, 1901. Breeding range High Arctic, including Spitsbergen, Novaya Zemlya, and e. Greenland; nonbreeding distribution “virtually unknown” (Cramp 1985a) but probably in e. Greenland Sea and adjoining waters; recorded from Mackenzie Bay (Am. Ornithol. Union American Ornithologists' Union 1957). Large, with proportionately larger bill; wing averaging 176.0 mm, tail 52.2 mm, culmen 53.7 mm, bill at greatest depth 44.7 mm, tarsus 28.5 mm, middle toe 42.5 mm (n = 2; Ridgway 1919; see Measurements, below, and in Cramp 1985a).

Photos / Sounds

Square

What

Black-legged Kittiwake (Tridactyla) Rissa tridactyla ssp. tridactyla

Observer

mccreedy

Date

June 12, 2019 08:20 AM UTC

Photos / Sounds

Square

What

Icelandic Black-tailed Godwit Limosa limosa ssp. islandica

Observer

mccreedy

Date

June 12, 2019 08:50 AM UTC

Description

apparently nesting pair

Photos / Sounds

Square

What

Roseroot Rhodiola rosea

Observer

mccreedy

Date

June 12, 2019 03:10 PM UTC

Photos / Sounds

Square

Observer

mccreedy

Date

June 12, 2019 03:32 PM UTC

Photos / Sounds

Square

What

Sand Lances Family Ammodytidae

Observer

mccreedy

Date

June 12, 2019 08:15 AM HST

Description

I am hoping that a fisheries expert may provide insight into what the puffins were provisioning their chicks.

Photos / Sounds

What

Arctic Willow Salix arctica

Observer

mccreedy

Date

June 12, 2019 09:07 AM HST

Photos / Sounds

What

Red Campion Silene dioica

Observer

mccreedy

Date

June 12, 2019 09:56 PM UTC