Eleven-Years Ago (02-February-2008) — Colorado

Outdoor Winter Nature in Colorado: Lily Lake in Rocky Mountain National Park.

During a winter visit to Lily Lake in Rocky Mountain National Park, I observed these two folks out in the middle of the frozen lake. What do you think that they are doing? To give you a hint, they are not ice fishing, but it does have to do with fish under a frozen lake. Please reply if you think you know what they were doing.

Winter Under Ice Dissolved Oxygen Level Measurement at Lilly Lake, Rocky Mountain National Park, Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 lens (ISO 200, 70 mm, f/11, 1/125 sec) (David J Mathre)
Winter at Lily Lake, Rocky Mountain National Park, Colorado. Image taken with a Nikon D3 and 24-70 mm f/2.8 lens (ISO 200, 70 mm, f/11, 1/125 sec) (David J Mathre)
Winter Under Ice Dissolved Oxygen Level Measurement at Lilly Lake, Rocky Mountain National Park, Colorado. Image taken with a Nikon D300 and 300 mm f/2.8 lens (ISO 200, 300 mm, f/8, 1/500 sec) (David J Mathre)
Winter at Lily Lake, Rocky Mountain National Park, Colorado. Image taken with a Nikon D300 and 300 mm f/2.8 lens (ISO 200, 300 mm, f/8, 1/500 sec) (David J Mathre)

Eight-Years Ago (01-June-2008) — Colorado

Springtime Nature in Rocky Mountain National Park: Lily Lake.

Male Broad-tailed Humming Bird at Lily Lake in Rocky Mountain National Park. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 280, 400 mm, f/8, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5.

Male Broad-tailed Humming Bird at Lilly Lake in Rocky Mountain National Park. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 280, 400 mm, f/8, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5. (David J Mathre)
Male Broad-tailed Humming Bird at Lily Lake in Rocky Mountain National Park. Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 280, 400 mm, f/8, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5. (David J Mathre)

Seven-Years Ago (01-June-2008) — Colorado

Springtime Nature in Rocky Mountain National Park: Lily Lake.

Red-Winged Blackbird Singing at Lily Lake in Rocky Mountain National Park, Colorado. Image taken with a Nikon D3 camera and 80-400 mm VR lens (ISO 1100, 400 mm, f/8, 1/400 sec).

Red-Winged Blackbird Singing at Lilly Lake in Rocky Mountain National Park, Colorado. Image taken with a Nikon D3 and 80-400 mm VR lens (ISO 1100, 400 mm, f/8, 1/400 sec). (David J Mathre)
Red-Winged Blackbird Singing at Lilly Lake in Rocky Mountain National Park, Colorado. Image taken with a Nikon D3 and 80-400 mm VR lens (ISO 1100, 400 mm, f/8, 1/400 sec). (David J Mathre)

Seven-Years Ago (01-June-2008) — Colorado

Springtime Nature in Colorado: Rocky Mountain National Park.

Male Broad-tailed Hummingbird at Lily Lake in Rocky Mountain National Park. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 400, 400 mm, f/11, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5.

Male Broad-tailed Humming Bird at Lilly Lake in Rocky Mountain National Park. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 400, 400 mm, f/11, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5. (David J Mathre)
Male Broad-tailed Hummingbird at Lily Lake in Rocky Mountain National Park. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 400, 400 mm, f/11, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5. (David J Mathre)

Six-Years Ago (01-June-2008) — Colorado

Springtime Nature in Rocky Mountain National Park: Broad-tailed Hummingbird.

The Male Broad-tailed Hummingbirds arrive first in the spring to define their territories. Spring comes late at nearly 9000 feet to Lily Lake in Rocky Mountain National Park.  Image taken with a Nikon D3 camera and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter.

Male Broad-tailed Humming Bird at Lilly Lake in Rocky Mountain National Park. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 280, 400 mm, f/8, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5. (David J Mathre)
Male Broad-tailed Humming Bird at Lilly Lake in Rocky Mountain National Park. Image taken with a Nikon D3 and 70-200 mm f/2.8 VR lens + TC-E II 20 teleconverter (ISO 280, 400 mm, f/8, 1/400 sec). Raw image processed with Capture One Pro, Focus Magic, and Photoshop CS5. (David J Mathre)