No…Not a Bison cow with triplets…Just two playful “red dog” calves coming over to play with her nursing calf. The Bison were just dropping their calves in late April.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/160 at f5.6; ISO 100; tripod]

Snow greeted us as we pulled in to the Mammoth Campground in Yellowstone after driving all night from Duluth. But as we waited for someone to vacate the campground so we could pick a spot, this male Mountain Bluebird entertained us by foraging near the gate.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/320 at f6.3; ISO 100; handheld]

Mountain Bluebird male

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/800 at f5.6; ISO 100; handheld]

Yellow-bellied Marmot surveys his “kingdom” in Yellowstone.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/250 at f5.6; ISO 100; tripod]

Yellow-bellied Marmot. I like how the shade of the mountain slope in the background becomes a beautiful blue blur.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/500 at f5.6; ISO 200; tripod]

Elk pair; His breath visible in the cool morning air.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/640 at f5.6; ISO 320; handheld]

We were bummed that the road that leads to LeHardy Rapids was still snowed in. This is the traditional hotspot for Harlequin Ducks. But fortunately we spotted this colorful pair along the Madison River.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/400 at f7.1; ISO 800; tripod]

Harlequin Duck male spreads his tail feathers after preening. Yellowstone is the southernmost breeding site for this species in all of North America! The main part of their breeding range includes British Columbia, Alaska, Yukon and Labrador. They prefer to nest along fast-flowing mountain rivers.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/250 at f6.3; ISO 400; tripod]

Harlequin Duck male

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/100 at f6.3; ISO 100; tripod]

Harlequin’s love fast water…the more turbulent the better! They dive underwater in rapids to feed.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/500 at f5.6; ISO 200; tripod]

Bison herd along the Madison River.

[Sony A6500 with Canon 18-55mm f3.5-5.6 lens at 18mm; (Metabones adapter); 1/400 at f6.3; ISO 160; tripod]

Beaver having a late afternoon snack.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/200 at f7.1; ISO 1600; handheld]

Sow Black Bear and one of her two tiny cubs. I got some nice video of this trio, which I will include in a future post.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/320 at f8; ISO 400; tripod]

Bison and her “red dog” calf.

We ran across a band of Bighorn ewes near Yellowstone Picnic area.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/400 at f5.6; ISO 100; tripod]

A trio of Black-billed Magpies wait out a snow squall near Mammoth.

[Sony A6500 with Canon 400mm f5.6 lens (Metabones adapter); 1/60 at f13; ISO 100; braced on car window]