Tag Archives: Northern Hawk Owl

A Day With the Vole Patrol

In northern Minnesota a chain of bogs and open forest near Sax and Zim are full of winged wonders. This track of land, the Sax Zim Bog, is renowned for its migrants from northern Boreal Forests that flit among the spruces and for the ghostly shapes of owls that drift on silent wings among the tamaracks. Spending time in the bog can provide amazing opportunities to watch these birds and learn about their survival skills in a harsh winter.

A Great Gray Feast

My dad and I arrived at Sax Zim Bog at 7:50 AM. The sun was just coming up in a bright blue sky, but it did not provide much warmth to the -20F day. However, without wind the day was quite pleasant and the conditions were perfect to find active owls. At 8:05 AM we found two active Great Gray Owls. The pair hunted 100 yards apart, perched on short, wooden power poles. In the typical behavior of owls, the closer owl swiveled its head back and forth, gathering the noises of its surroundings. Great Gray Owls are the largest owl in the world and their unique facial disc funnels sound directly into their ears like a satellite dish focuses a signal.  This adaptation allows them to be efficient predators able to locate rodents under the snow.

When the owl swiveled its head and focused its gaze I knew that the hunt was on. Soaring silently on a 5-foot wing span the owl plopped down in the snow 30 yard away. Its body was half in the snow and half out, and for 10 seconds it just sat in the snow giving the illusion that it was unsuccessful. But then the owl surged from the snow with a large vole grasped in its talons! I stood in awe at having witnessed the hunt first hand.

Great Gray Owl, Sax Zim Bog, Minnesota
A Great Gray Owl swivels its head to search for prey.
Great Gray Owl, Sax Zim Bog, Minnesota
A distant Great Gray Owl hunts along a tree line.
Great Gray Owl, Sax Zim Bog, Minnesota
A Great Gray plunks into the snow in pursuit of a vole that tunneled below the surface. He caught it!
Great Gray Owl, Sax Zim Bog, Minnesota
The silent flight of a Great Gray Owl to its perch. Look at that camouflage!
Great Gray Owl, Sax Zim Bog, Minnesota
A Great Gray Owl holds onto a recently captured vole.
Great Gray Owl, Sax Zim Bog, Minnesota
A Great Gray Owl holds onto a recently captured vole.

Pouncing Northern Hawk Owls

As their name suggest, Northern Hawk Owls are an owl of the far north that migrate south in the winter. Because northern climates do not get much darkness in the summer these unique owls have adapted by hunting at all times of the day. We found our first hawk owl at 1PM, characteristically perched at the very top branches of a dead tree. After watching for awhile the owl zoomed to a perch further in the forest and then another perch even further out. They do this to find new and unsuspecting rodents to munch on.

When we saw the Northern Hawk Owl kill its first vole, I was struck by how much different their approach was than the Great Gray. It took off from a branch and then hovered (stooped) silently above the ground (thanks to modified wing edges that dampen sound) much like a hawk or falcon would do.  It rapidly came out of the stoop and crashed to the ground to catch its first dinner. 20 minutes later it exhibited the same behavior. It is amazing to think how many voles the Owls of Sax Zim Bog must kill on a daily, weekly, and yearly basis!

Northern Hawk Owl, Minnesota, Sax Zim Bog
This Northern Hawk Owl caught 2 voles as several photographers and I watched.

Northern Hawk Owl, Minnesota, Sax Zim Bog Northern Hawk Owl, Minnesota, Sax Zim Bog

Northern Hawk Owl, Minnesota, Sax Zim Bog
A Northern Hawk owl speeds to its next perch like a speeding bullet.

Northern Hawk Owl, Minnesota, Sax Zim Bog Northern Hawk Owl, Minnesota, Sax Zim Bog Northern Hawk Owl, Minnesota, Sax Zim Bog

A day at Sax Zim Bog can bring about AMAZING experiences, but please practice ethical photography of the residents that live there. Owls are very susceptible to the unethical practice of baiting. For the safety of the owls, please DO NOT bait them! Also, please give them their space as they make and consume kills and do not stay with an owl too long. Most of theses images were taken with an 800mm lens and thus were taken from a respectful distance. Doing these things will keep the owls safe and ensuring that you have the best day possible observing these amazing animals!

Birds and Blossoms of the Tundra

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.

Bluethroat Video:

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.

Mosquito Pollination
A mosquito extends its proboscis peacefully into a pink plume to take a sip. It will carry pollen to the next pink plume it feeds on!
Frigid Shooting Star Mosquito
A mosquito perches on a frigid shooting star. It serves as further proof that they like nectar meals, but also gives some scale to the shooting star flowers. They are not that big!
Bird List
Our bird list for the trip, a total of 42 species 🙂

Snowbows and A Quick Transition To Winter

This post is a celebration of the beauty and invigoration fresh snow, and early winter days when a cold nose is not a drudgery. Instead, a rosy tip is acknowledged as punctuation to an exciting time as the season changes. During the early days of winter, fall has not quite relinquished its beauty. Animals and humans alike are fat-and-happy.

Setting the poetry and light thesis statement aside, to all who read this, beware! Winter is here in Alaska, and for my friends in the lower 48, it seems it will descend upon you in short order! On Thursday a friend and I left for the North Slope for some caribou hunting (Note : I can’t leave that story open ended. I was archery hunting, and was a mere 3 seconds from success on two occasions but did not have the chance to deliver the coup de gras on some keen caribou.) The trip over the Brooks Range was marred by sloppy roads and rain. My truck was caked in thick mud which was slippery to walk on, not to mention drive on. Fast forward 60 hours, and the trip south revealed 8 inches of snow 80 miles north of Fairbanks which had fallen in our absence. What a change, and so quickly! It is likely that winter is here to stay, temperatures are staying around freezing during the day and dipping to the lower teens at night.

The snow did bring some incredible beauty as only a first snow can. Rivers were still flowing, and the bending branches of snow-laden spruce leaned into river channels along the Dalton. On Wickersham Dome ghost-trees already heavy with their first layer of hoar frost for the year kept silent sentry.

This black-and-white photo captures the flowing stream and the contrast of fresh snow to the water.
This black-and-white photo captures the flowing stream and the contrast of fresh snow to the water.
The river just south of Chandlar Shelf was open and flowing, but probably not for long. Ice shelves covered a lot the river.
The river just south of Chandlar Shelf was open and flowing, but probably not for long. Ice shelves covered a lot the river.
A slowly flowing streams meanders past snow-covered banks. So beautiful!
A slowly flowing streams meanders past snow-covered banks. So beautiful!
Some lingering dwarf birch leaves are ringed in hoar frost on Wickersham Dome.
Some lingering dwarf birch leaves are ringed in hoar frost on Wickersham Dome.
Wickerhsam Dome Spruces
Snow-covered spruces on Wickersham Dome

I did observe a very novel phenomenon – I would love to hear if anyone has witnessed this before! Behold, the snowbow. On our drive home we were met by gray skies and the hills were wreathed in falling snow. However, at the end of the Dalton Highway the sun broke and the landscape was lit as far as the eye could see. A snow cloud hanging low to the north of us caught the rays and formed a snowbow. I have seen many sundogs, but had never seen a rainbow caused by snow crystals.

Here's a phenomenon I had never seen - the snowbow! Although the colors were not as vibrant as a rainbow it was still beautiful. Has anyone else had the chance to see this before??
Here’s a new phenomenon – the snowbow! Although the colors were not as vibrant as a rainbow it was still beautiful. Has anyone else had the chance to see this before??
A full snowbow! The sun broke through at just the right time to create this stunning landscape. Pretty cool!
A full snowbow! The sun broke through at just the right time to create this stunning landscape. Pretty cool!

I will leave you with this northern hawk owl which was a great bird to see along the way. These birds are known for their boreal habits. They spend the days on spruces watching for rodents and can be hard to spot. This was my first time seeing this bird, although they do occur in Minnesota in the winters during owl irruptions (i.e. owls heading further south than their ‘normal’ range due to environmental or food conditions). The clip below is a short one of a hawk owl behavior, cleaning.

This northern hawk owl was a real treat as we headed south. They are boreal forest feeders which migrate south in the winters. They are known for hunting during the day by perching on the tops of spruces looking for rodents. This black-and-white photo captures the snowy landscape of a hunting hawk owl.
This northern hawk owl was a real treat as we headed south. They are boreal forest feeders which migrate south in the winters. They are known for hunting during the day by perching on the tops of spruces looking for rodents. This black-and-white photo captures the snowy landscape of a hunting hawk owl.