Our trip had taken us from Fairbanks,Alaska up the Haul Road (Dalton Highway), over Chandlar Shelf, and peaked at Atigun Pass (4,738′). We traversed the valley on the north side of the Brooks Range, and explored as far as Toolik. Although we were on the tundra, we never went far enough to leave the Brooks Range out of sight. Because of the incredible backdrop the mountains provided, I was compelled to place what we observed in their natural habitat. The resulting pictures and galleries provide a slice of diversity of the flowers and birds found on the tundra.
One of the remarkable birds seen during the trip was a bluethroat. These awesome birds are one of a few species which winter in Asia, but breed on the tundra in Alaska. Due to the amount of migration time needed they spend a lot of time on the wing! When we found it with help from another birder, the male bluethroat was displaying in the air and calling out in the voices of many species. Bluethroats are almost perfect mimics, and as it sang out we could hear the calls of redpolls, gray-cheeked thrushes, and swallows in its repertoire. A bluethroat female will find this male attractive if it can mimic enough other birds. The video below captures a few of the calls of this unique and beautiful bird, and shows of its stunning throat!
The northern hawk owl was another great bird of the trip. These raptors are efficient predators and unlike most owls are active during the mornings, evenings, and even during midday. This adaptation arose from the lack of nighttime in the tundra. The hawk owl we found was perched in the dead limbs of a burned black spruce, and actively twisted its head back and forth at every new sound. Suddenly the twisting head stopped, and it fixed its gaze on some unfortunate small animal on the ground. It dove off the branch with tucked wings, swooped low above the shrubs, but then perched again with empty claws. No breakfast this time! The second video below shows the intense stare of this bird.
Northern Hawk Owl Video:
Yellow, purple, pink, white, and red splashes of color were evident all across the tundra. Each color was associated with a pointed, rounded, tall, or stunted flower and stalk. The flowers of the tundra come in many different colors and shapes! Often the species are associated with a particular habitat type. Alpine arnica were found in the higher alpine tundra, arctic poppies in the short tundra, and bell heather tucked into the low pockets of the tussocks. One of the unexpected flowers of the trip were the frigid shooting stars that lined a small stream south of Toolik Field Station. Although I have wanted to see them for years now, I never thought the first time would be on the tundra! The flowers are aptly named, as their unique shape trails behind them as if they fell from the sky.
I am about to sing the unsong of the mosquito because each bite from the armies of flocked, winged, beasts can cause doubt that they serve any purpose but to cause misery. However, during the trip I documented one of the mosquito’s greatest contributions to the ecosystem. In the tundra, bees and butterflies are not as abundant as they are in forested areas, however, as shown above the variety and abundance of flowers have to be pollinated by something! In step the buzzing, nagging, mosquito. Male mosquitoes do not feed on blood, but rather nectar and thus spread pollen. Their hunger ensures that the blooms of the tundra create seeds and propagate for the next year.