Birds with “Blown Eyes”

Because I am a bird photographer I get to see and photograph our beautiful feathered friends, learn their habits and behaviors and sometimes I get to take a look at unusual conditions in the birds themselves.

Yellow-crowned Night Heron composite with blown eye
Yellow-crowned Night Heron (Nyctanassa violacea) composite with blown eye

The Yellow-crowned Night Heron above exhibits what I and other bird photographers have come to call “blown eye“.  Both of the images are photos of the same bird and the right eye frame at the top is normal. The second image shows two tear drop shaped black blobs in the iris which is abnormal. I don’t know if this was caused by an injury or if this might be a congenital condition.

American Oystercatcher composite with blown eye

American Oystercatcher (Haematopus palliatus) composite with blown eye

While I lived in Florida I often noticed “blown eyes” in American Oystercatchers and I have seen it where it was evident in both eyes of adult birds. The juvenile Oystercatchers have dark irises and it might be difficult to detect if their eyes are “blown” without getting images that are lit well and close up. These images of of two different birds that were a mated pair.

I recently read about a congenital condition in humans called “iris colobomas” which is also found in other mammals and birds and have begun to wonder if that might not be the cause of the abnormal pupils I see in some species of birds instead of an injury to the eye.

Great Horned Owl composite with blown eye Great Horned Owl (Bubo virginianus) composite with blown eye

 The top Great Horned Owl (photographed in Utah) in the composite above has normal eyes, the difference in the size of the pupils is caused by the angle of light dilating the pupils differently. The Great Horned Owl (photographed in Montana) shows a left “blown” eye. To me it looks like the pupil has leaked into the iris.

I’ve seen this condition in the species I have shown in my images and I’ve also seen it occur in Bald Eagles.

None of the birds I have photographed with blown eyes appear to have any difficulty seeing and it doesn’t seem to limit their ability to stalk or hunt prey. The Yellow-crowned Night Heron in the image above stalked, captured and ate three Ghost Crabs while I observed and photographed it. American Oystercatchers probe for their prey and none of the birds with blown eye that I observed exhibited any more difficulty in locating food than the adults nearby that did not have this condition. The Great Horned Owl with the blown eye was a male and the pair had three chicks and I am almost certain he had no difficulties providing food for them.

I wonder how many other species exhibit “blown eyes” and what the cause is. Injury or Congenital Defect. I would love to read additional input on this topic so please feel free to comment.

Mia

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Wild and Wonderful – Antelope Island State Park – The Birds

This is the third post in my series about Wild and Wonderful Antelope Island State Park, I’ve saved the best (and longest) for last. The Birds! Okay, maybe they aren’t the best thing about Antelope Island State Park, but I am a bird photographer and they are what I am most passionate about!

Birds of Antelope Island:

Before I get to the avian life of the island I’d like to provide a link from UtahBirds.org that has a checklist of the birds of Antelope Island that is downloadable. If you need ID help for the birds found on the island UtahBirds.org has a great photo gallery of the various species put together by the wonderful Milt Moody that are contributed by local bird photographers that can assist in ID.

Upland Game Birds:

Feeding Chukar (Alectoris chukar)

Feeding Chukar (Alectoris chukar)
Nikon D200, f8, 1/1250, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm

Chukars are the most visible of the upland game birds that inhabit the island, they do not migrate so they can be seen all year round. Although they are not native to North America the Chukars on Antelope Island have adapted well to their adopted home. My first sighting of a Chukar in the wild was on Antelope Island and I am still as thrilled today to photograph them as I was on my first to the island.

Other upland game birds that can be seen on the island are Ring-necked Pheasants, California Quail and I’ve seen Sharp-tailed Grouse there as well. Thankfully the birds on Antelope Island are not hunted.

Gulls:

California Gull (Larus californicus) chasing brine flies

California Gull (Larus californicus) chasing brine flies
Nikon D200, f6.3, 1/1500, ISO 250, Nikkor 200-400mm VR with 1.4x Tc at 400mm

The Great Salt Lake and its surrounding marshes are a magnet for birds like gulls and terns. The Utah State Bird is the California Gull and it is often visible along the causeway to the island, the shoreline, in flight over the island and can also be found perched on the pavilions near the campgrounds and the Buffalo Grill.

I believe that although gulls are common they can be uncommonly beautiful photographed in the right light, in a great pose or interesting habitat.

Shorebirds:

Killdeer on a rock
Killdeer (Charadrius vociferus) on a rock
Nikon D200, f6.3, 1/320, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm

There are many shorebirds that visit Antelope Island, the causeway to the island and the surrounding freshwater marshes, too many for me to post an image of each one so I will just post a few. I counted 35 on the checklist but some of those are rare vagrants, still that is a lot!

Some of the shorebirds are just passing through the Salt Lake Valley during their migration further north to their breeding ground, the Killdeer pictured above nests on the island along with several other species.

Willet (Tringa semipalmata) wing lift

Willet (Tringa semipalmata) wing lift
Nikon D200, f7.1, 1/750, ISO 400, 200-400mm VR with 1.4x TC at 400mm

Willets are another species of the shorebirds that nest on the island, prior to breeding season they can be seen quite often along the causeway but when they are nesting they can be seen in the grasses and on the rocks along the road. They let their presence be known by loud calling and wing displays. The bird above was displaying because another Willet was nearby and they don’t seem to care for intruders on their territory.

Male Long-billed Curlew (Numenius americanus)

Male Long-billed Curlew (Numenius americanus)
Nikon D200, f5.6, 1/640, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm

It won’t be very much longer before the Long-billed Curlews return to nest on Antelope Island and until I can hear their hauntingly beautiful calls. In Florida I never heard the calls of these graceful shorebirds, it is call that once you hear it, you’ll never forget it. I am very much looking forward to their return.

In the summer the calls of American Avocets and Black-necked Stilts can easily be heard along the causeway and their numbers are in the thousands (and thousands). There are just so many shorebirds present at times I can’t post a photo of them all but the checklist I linked to above shows all of the species.

Perching Birds:

Black-billed Magpie (Pica hudsonia) on nest

Black-billed Magpie (Pica hudsonia) on nest
Nikon D200, f6.3, 1/640, ISO 500, +1.0 EV, Nikkor 200-400mm VR at 380mm

There are also more perching birds on the island than I can list, I didn’t even try to count them so I’ll just post some images of the ones I see often like this Black-billed Magpie on top of its nest. Black-billed Magpies are great fun to observe and photograph at any time of the year. Some people call them noisy but as a bird lover their raucous calls are music to my ears.

Common Raven (Corvus corax) with nesting material

Common Raven (Corvus corax) with nesting material
Nikon D200, f6.3, 1/1500, ISO 400, +0.7 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm

Common Ravens are in the Jay, Crow and Allies family along with the Black-billed Magpies and they are among the smartest birds in the world. They can bee seen flying all over Antelope Island, on the ground, perched on bushes or harassing other birds and animals. Just yesterday alone I saw them harassing Northern Harriers, a lone Coyote on a hill and a Rough-legged Hawk. Fiesty and fun!

Male Brewer's Blackbird (Euphagus cyanocephalus) displaying on sagebrush

Male Brewer’s Blackbird (Euphagus cyanocephalus) displaying on sagebrush
Nikon D200, f7.1, 1/500, ISO 400, Nikkor 200-400mm VR with 1.4x Tc at 400mm

There are several different species of Blackbirds present on the island which include Brewer’s Blackbirds, the bird above is displaying for a female who was just outside of this frame. I love the beautiful iridescence that can been seen in their plumage when the light is at the right angle.

Western Meadowlark (Sturnella neglecta) singing in early spring

Western Meadowlark (Sturnella neglecta) singing in early spring (low light)
Nikon D200, f6.3, 1/160, ISO 400, +1.0 Nikkor 200-400mm VR with 1.4x TC at 400mm

I don’t believe I have ever made a visit to Antelope Island without hearing or seeing Western Meadowlarks. Ever. During breeding season they seem unable to stop singing, you can tell they are trying to not sing but it just bursts forth anyway.  And when they are feeding nestlings it is not uncommon to see them with 25 or more bugs in their bills. I don’t know how they don’t drop them all.

Male Horned Lark (Eremophila alpestris)
Male Horned Lark (Eremophila alpestris)
Nikon D200, f6.3, 1/2000, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm

Horned Larks are also year round residents on the island, they delight me with their soft calls while perched on rocks and in flight. I love their subtle coloration, the little bit of yellow on their faces and those tiny little horns. They can be seen out in the open, feeding in the grasses, perched on signs and singing from the top of boulders that dot the island. I can’t resist taking photos of them.

Sage Thrasher (Oreoscoptes montanus) juvenile

Sage Thrasher (Oreoscoptes montanus) juvenile
Nikon D200, f9, 1/500, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm

Sage Thrashers are part-time residents of Antelope Island that breed and nest during the summer. Some years they show up in large numbers while other years there just aren’t as many. I love to see them flitting from one sage brush to another or perched on the boulders like the juvenile shown above. I miss them during the winter but I know I’ll get to see them again soon.

Perched Loggerhead Shrike (Lanius ludovicianus)

Perched Loggerhead Shrike (Lanius ludovicianus) in low light
Nikon D200, f6.3, 1/1000, ISO 400, +0.7 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm

I am always tickled to see Loggerhead Shrikes on the island and normally I hear them just before I see them. They are classified as “songbirds” and they really do sing but to me they look and act like small raptors. They are fierce, aggressive and very interesting birds. During the winter their cousins; the Northern Shrikes can also been seen on the island, this winter I have seen a few but too far away to get decent images of them.

There are sparrows, doves, warbler, wrens, vireos, tanagers and many more perching birds that live on or visit Antelope Island, it is such a bird magnet!

Pelicans:

American White Pelicans (Pelecanus erythrorhynchos) in flight

American White Pelicans (Pelecanus erythrorhynchos) in flight
Nikon D200, f7.1, 1/1000, ISO 250, Nikkor 200-400mm VR with 1.4x TC at 400mm

American White Pelicans breed in the Great Salt Lake area and it isn’t uncommon to see large flocks of them soaring in the thermals on clear days. These are huge birds with wingspans of up to 108 inches, nearly 30 inches longer than their relative the Brown Pelican. They are graceful and beautiful in flight.

Their cousins; the Double-crested Cormorants, are also seen in flight over the island from about March until late fall.

Ducks and Grebes:

Green-winged Teal (Anas crecca) with Northern Shovelers (Anas clypeata) in the surf of the Great Salt Lake

Green-winged Teal (Anas crecca) with Northern Shovelers (Anas clypeata) in the surf of the Great Salt Lake
Nikon D300, f6.3, 1/2000, ISO 640, Nikkor 200-400mm VR with 1.4x TC at 400mm

Swans, geese and many species of ducks can be found in the waters of the Great Salt Lake and nearby freshwater marshes, I counted 29 of them on the bird checklist for Antelope Island.  Autumn and winter is awesome for seeing ducks along the causeway which sometimes number well over thousands within plain view.

For my Florida friends:  yes, we actually get surf on the Great Salt Lake when the winds are strong and our ducks seem to enjoy surfing!

Other water birds that can be sen on the lake are five species of Grebes, American Coots and occasionally Common Loons.

Hawks, Eagles and Falcons: 

Northern Harrier (Circus cyaneus) male in flight

Northern Harrier (Circus cyaneus) male in flight
Nikon D300, f9, 1/1000, ISO 640, +1.3 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm, not baited

Antelope Island State Park is home year round for Golden Eagles and Bald Eagles are a common sight during the winter with fly overs and Bald Eagles sitting on the ice of the Great Salt Lake. Northern Harriers are year round residents that cruise along the causeway to the island, near the shorelines and over other areas of the island itself. Northern Harriers prefer voles as their diet and there must be plenty of those around to support the numbers of harriers that I have seen.

Osprey are seen flying over the island during migration, they don’t fish in the Great Salt Lake because it is too saline for fish to live in but they do fish in the surrounding freshwater marshes and ponds.

Rough-legged Hawk (Buteo lagopus) in flight

Rough-legged Hawk (Buteo lagopus) in flight
Nikon D300, f6.3, 1/2500, ISO 640, +0.3 EV, Nikkor 200-400mm VR with 1.4x TC at 285mm, not baited

Rough-legged Hawks have been plentiful on the island this winter and I have been overjoyed with that happening. I have been able to observe them hunting, hovering, eating, perching, having aerial fights with each other, swooping towards their prey and in flight. I have learned much more about this species habits because they have been so abundant.

Other hawks that are found on the island include Sharp-shinned, Cooper’s, Red-tailed and Swainson’s Hawks.

American Kestrel (Falco sparverius) male

American Kestrel (Falco sparverius) male
Nikon D200, f7.1, 1/350, ISO 400, +1.0 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm, not baited

Then there are the Falcons of Antelope Island. This beautiful little American Kestrel male was perched on a snow covered shrub while keeping an eye on me. They are the smallest falcon in North America but I don’t think they know that, I’ve seen them dive bombing much larger birds than themselves. Feisty and small, that is what my mother used to say about me.

Peregrine Falcon (Falco peregrinus) on prey in low light

Peregrine Falcon (Falco peregrinus) on prey in low light
Nikon D300, f7.1, 1/200, ISO 640, -0.3 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm, not baited

Peregrine Falcons are permanent residents of the Antelope Island area, during warmer months they often feed on a variety of shorebirds and during the winter they eat ducks like this Northern Shoveler. Inflight they are very challenging to photograph because they fly so fast. This falcon wasn’t bothered by my presence as it ate but it did keep an eye on me at times.

Juvenile Prairie Falcon (Falco mexicanus) in early morning light

Juvenile Prairie Falcon (Falco mexicanus) in early morning light
Nikon D300, f6.3, 1/2000, ISO 640, +0.3 EV, Nikkor 200-400mm at 400mm, not baited

Prairie Falcons are another year round resident of the area and I have had a great time this winter photographing them. Until this winter they were a nemesis bird for me, always too far away to get good photographs of, but they are a nemesis no more.

Merlins are seen during the winter on the island and the causeway, I’m still working on getting some images of them from the Antelope Island area.

Owls:

Adult Barn Owl (Tyto alba) in flight

Adult Barn Owl (Tyto alba) in flight
Nikon D200, f6.3, 1/640, ISO 400, Nikkor 200-400mm VR with 1.4x tc at 400mm, not baited

Barn Owls nest on the island and nearby locations, when the adults are feeding chicks they can be seen in flight during daylight. When we have a hard winter (and this year we are not) they can be seen hunting all day long. This Barn Owl was hunting near the beginning of the causeway to the island which is marshy and it has the mud on its feet from pouncing on prey.

Great Horned Owl (Bubo virginianus) adult

Great Horned Owl (Bubo virginianus) adult
Nikon D300, f6.3, 1/1000, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm, not baited

Great Horned Owls can be seen and photographed in several locations on the island and are permanent residents. Since I was a child I have always been fascinated by Great Horned Owls so I am always thrilled to have an opportunity to photograph them.

Juvenile Burrowing Owl (Athene cunicularia) flapping its wings

Juvenile Burrowing Owl (Athene cunicularia) flapping its wings
Nikon D200, f6.3, 1/1600, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm

I simply adore Burrowing Owls, they are little, cute, funny and stunningly beautiful. They are a pleasure to photograph and because they are often very animated it can be hilarious too. I have had to hold my breath to squelch my laughter at times just so my camera and lens wouldn’t shake.

Other Owls that are seen on Antelope Island are Short-eared and Long-eared Owls. Northern Saw-whet Owls have also been seen and this winter there was a Snowy Owl reported along the causeway which turned out to be “A One day Wonder”, I would have loved to have a few images of that visitor from the Great White North. Maybe another year.

There are other birds of Antelope Island whose images aren’t here, there are simply too many for a blog post. Perhaps I should create a book.

Thanks for looking at the series of images and my thoughts from Wild and Wonderful ~ Antelope Island State Park!

Mia

 

* If you are in the Great Salt Lake Area from May 17th through the 21st (2012) you may want to consider visiting the Great Salt Lake Bird Festival which includes events on Antelope Island State Park.  For more information please click on the graphic below.

Great Salt Lake Bird Festival

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Double Delight and an Observation

Normally I think of myself as very observant, I often see birds in the field before the other photographers who might be in the field with me. I can spot just a part of an animal and know that they are there. When I am in the field my eyes are constantly scanning my surroundings on the land and in the air. I’ve gotten to know several locations very well and can spot a bump on a sagebrush that shouldn’t be there that turns out to be a bird. I once noticed a rock that looked out of place. Well it was a very dark Porcupine.

But I have found that sometimes I need to fine tune my vision even further.

Great Horned Owl - November 11, 2011
Great Horned Owl – November 11, 2011
Nikon D300, f6.3, 1/1000, ISO 400, +0.3 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm, natural light, not baited or set up

On the 11th of November I spotted this Great Horned Owl (Bubo virginianus) in a Tamarisk and photographed it, after seeing where it was perched I started to routinely look for it from a road above where the owl has been roosting.   On the 22nd of November I saw a familiar shape in the same Tamarisk and went down to photograph what I believed to be the same owl that I had photographed on November 11th.

Great Horned Owl - November 22, 2011

Great Horned Owl – November 22, 2011
Nikon f7.1, 1/1600, ISO 640, +0.7 EV, Nikkor 200-400mm VR with 1.4x TC at 400mm, natural light, not baited or set up

I took many images of the owl I spotted on the 22nd of November and though I wished then that the bird had chosen a more open location to roost I was happy with the images I took.

After editing a few images from the second session with the Great Horned Owl in the Tamarisk I uploaded three of the images to my photo galleries and when I went to the gallery to verify that they had uploaded correctly I saw somethings immediately that I had not seen in the field.

The owl I photographed on November 22nd was NOT the same owl I had photographed on November 11th.

When I had the images side by side I quickly noticed that the owl I photographed on November 11th had rustier coloration in the facial disk, forehead and body. That owl also has more barring of the chest.

The owl I photographed on November 11th had more white on the chest, less barring and the facial disk was grayer.

I’m excited that two owls are using the same roosting location and from now on I will be looking more closely to determine which of the two I am seeing.

Who knows; maybe I’ll be surprised and spot a third owl in that same location.

Mia

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Great Horned Owl – Tiger of the Sky

Great Horned Owl (Bubo virginianus)
Great Horned Owl (Bubo virginianus)
Antelope Island State Park, Davis County, Utah
Nikon D300, f6.3, 1/1000, ISO 400, Nikkor 200-400mm VR with 1.4x TC at 400mm, natural light, not baited

Great Horned Owls are called many names, a few of them are Hoot Owl, Tiger Owl, Cat Owl and Winged Tiger. My favorite name for Great Horned Owls is “The Tiger of the Sky” and it is very descriptive of this large, fierce owl.  While the Great Gray Owl is North America’s largest owl, the Great Horned Owl may well be the fiercest owl. Great Horned Owls are apex predators, meaning that as adults they are not preyed upon. I know I don’t want to have those large talons take a chunk out of me.

I spotted this Great Horned Owl yesterday on Antelope Island State Park and it was an unexpected delight. I only had a few minutes with the owl because another car came along and I suspect that two vehicles made it uncomfortable enough to fly away.

Some photographers may not have taken the image because the owl was perched in a Tamarisk, an invasive shrub also known as Salt Cedar but I figure the owl didn’t care if it was invasive or not so I shouldn’t either. Besides; the autumn colors of the Tamarisk complimented the owl’s coloration very nicely.

It was the second time this week that I have found a Great Horned Owl in unexpected locations, I’ll be keeping a look out for them again in the future.

Mia

More Great Horned Owl images

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Great Horned Owl juvenile

Great Horned Owl juvenile in early morning light

Great Horned Owl juvenile in early morning light
Glacier County, Montana
D200, tripod mounted, f7.1, 1/640, ISO 250, 200-400mm VR with 1.4x TC at 400mm, natural light, not baited

Normally I prefer natural settings when I photograph birds but there are times when I believe that man made structures or features can add to an image rather than detract. Weather worn fence posts, rusty barbed wire, wood with an aged patina or rustic building structures can add interesting textures and visual appeal.

I especially like the combination of old wood and owls, in this photo a juvenile Great Horned Owl (Bubo virginianus) is perched on an external structural beam of an old granary in Montana in warm, early morning light. My camera and lens were mounted on a tripod and the owlet was static so I was able to use a relatively low ISO and shutter speed. My reason for doing that is because the lower ISO produces more fine detail than if I had gone to ISO 500. I wanted to capture the details in the downy feathers of the young owl plus the details and character of the old wood.

Juvenile Great Horned Owl yawning

Juvenile Great Horned Owl yawning
Glacier County, Montana
D200, tripod mounted, f7.1, 1/350, ISO 250, 200-400mm VR with 1.4x TC at 400mm, natural light, not baited

A rule that bird photographers often follow is to have eye contact with the bird but I believe that rules can be broken and still produce appealing images. There may be some people who would not like the photo above because it does not have eye contact from the bird, personally I think the image is interesting because of the wide open yawn of the immature owl and that with the bird’s eyes closed it appears to have long, dark eye lashes.

So; while some viewers may not like this image, for me this photo has great appeal even though I have broken a rule. Rebel that I am. :-)

Great Horned Owl juvenile in a granary window

 Immature Great Horned Owl in a granary window
Glacier County, Montana
D200, tripod mounted, f6.3, 1/500, ISO 400, +0.3 EV, 200-400mm VR with 1.4x TC at 400mm, natural light, not baited

This image was taken in evening light that wasn’t quite as warm as the two owl photos above that were taken in early morning light so the wood does not appear to be as golden. The strong winds of the Montana plains have taken a toll on these old structures, the granaries lean away from the normal direction of the wind and nothing appears to be level any more.

I like how the owl stands out from the very dark interior of the granary through the window, the pose of the bird and the knotty, cracked appearance of the wood. Even though I do not have direct eye contact from the young owl one of the things I like is how it appears to be gazing off in the distance and doesn’t show the least bit of concern for my presence.

A pair of Great Horned Owls have raised a brood each year in these old granaries on the farm in Montana, I hope that next year I’ll be able to photograph them again.

Mia

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