Ten Best Birds from St. Paul Island, 2012

Last summer (2012) I had the privilege of working as a guide on St. Paul Island, Alaska, with Scott Schuette and Doug Gochfeld.  St. Paul Island is one of the Pribilof Islands, a small group in the middle of the Bering Sea.  Its unique geographic location makes it a famous birding destination: it is slightly west of the easternmost tip of Russia, and so it frequently gets old-world vagrants.  Plus, it is a great spot to see some of the endemic Bering Sea species like Least Auklets, Crested Auklets, and Red-legged Kittiwakes.

Today, I want to show you the ten best birds of my 2012 season on the island.  There are many ways to define the "best" birds.  This is not a science.  The ranking here is strictly based on how much I enjoyed seeing them.  That is of course strongly affected by rarity, but these are not necessarily the ten rarest birds.


10. Wood Sandpiper.  This species is major rarity anywhere in the contiguous 48 states, but annual in small numbers at St. Paul.  I saw up to three individuals in a day, and photographed both juveniles (like this one) and an adult.

This juvenile Wood Sandpiper paused in Town Marsh on St. Paul Island while trying to find its way to Australia or southeast Asia. (copyright Ryan O'Donnell)

9. Gray-tailed Tattler.  Like the Wood Sandpiper, this species is annual on St. Paul but very rare in the contiguous 48: a bird in Massachusetts last fall was only the third North American record away from Alaska.  We had multiple sightings of this species in their fall migration, up to two in a day.   

This adult Gray-tailed Tattler was photographed on the sandy beach on the north side of the island, probably the first land it had seen since leaving Siberia on its way south. (copyright Ryan O'Donnell)

8. Little Stint.  Also rare in the contiguous 48, with total records probably around 50 sightings, and less than annual on St. Paul.  We had up to two individuals at a time on the island last year.

This juvenile Little Stint (at front right) joined a few juvenile Western Sandpipers to snack in the mudflats on St. Paul as it was headed south. (copyright Ryan O'Donnell)

7. Hawfinch.  This was high on my list of dream birds when I was preparing for my summer in the Pribilofs.  This bird, first spotted on May 23rd and still present a week later when our access to the area where the bird was found was closed for the fur seal breeding season, was the 10th record for the Pribilof Islands.  There are no North American records of this species outside of Alaska, and it is less than annual in Alaska.

This Hawfinch, with dirt on its bill from picking at seeds in the grass, is a Eurasian relative of our Evening Grosbeak. (copyright Ryan O'Donnell)

6. Tundra Bean-Goose.  This species is "casual" (less than annual) in Alaska, and unrecorded elsewhere in North America.  Many earlier records of "Bean Goose"from Alaska had to remain unidentified when the species was split into the Tundra Bean-Goose and Taiga Bean-Goose.  This was an exciting find as our first real Asian rarity of the season, on May 12th.

After we accidentally flushed this Tundra Bean-Goose from a small melt pond, I was afraid we wouldn't see it again.  A few minutes later, it circled back past us and I was able to take a few photos, including this one.  (copyright Ryan O'Donnell)

5. Terek Sandpiper.  Another of my dream birds before arriving on the island, this fall migrant hung around for several days and pleased many visiting birders.  This species is named for the Terek River where it was first discovered, a tributary of the Caspian Sea.

I love the unique head shape and upturned bill of this Terek Sandpiper.  (copyright Ryan O'Donnell)

4. Eurasian Bullfinch.  Wow, what a charmer!  This adult male was found coming to some seed spread by a local resident between houses in the center of town.  Imagine having this on your yard list in North America!  This was the first spring record for the Pribilofs, but there had been a handful of fall records.

The bold and beautiful male Eurasian Bullfinch, peeking up from a meal of millet.  (copyright Ryan O'Donnell)

3. Dark-sided Flycatcher.  Flycatchers in general are among my favorite groups of birds, pushing this drab juvenile into the top three.  This was the seventh of this species reported from the Pribilof Islands.

This juvenile Dark-sided Flycatcher probably found plenty of bugs in the leeward side of an old volcanic cone on St. Paul.  (copyright Ryan O'Donnell)

2. White-tailed Eagle.  This Asian counterpart to North America's Bald Eagle was first found early in the season and continued, off and on, for the rest of the year.  It would sometimes go missing for weeks at a time, and we suspected it might be moving between the Pribilof Islands.  It was frustrating at times because it never seemed to develop much of a pattern, making it hard to track down, but it was thrilling any time it happened to fly past as it hunted around the island.  This was the first time this species had been seen in the Pribilofs.

White-tailed Eagle soaring over St. Paul Island. (copyright Ryan O'Donnell)

1. Pin-tailed Snipe.  Easily the rarest bird, this was our only Code 5 bird (five or fewer North American records), and this was the fifth North American record.  The previous four records were all from Attu Island, at the western end of the Aleutians.  Attu is far enough west to be in the eastern hemisphere, so including one record from a remote part of the Hawaiian Islands, this was the second record for the western hemisphere.  This photo is about the best I could manage, but fortunately Doug was able to take some better ones!

Out-of-focus Pin-tailed Snipe flushing from the tundra of St. Paul Island (copyright Ryan O'Donnell)

BAS Field Trip: Antelope Island

Yesterday I led a group of seven birders on a field trip to Antelope Island for the Bridgerland Audubon Society.  This was a good turnout considering the weather: our first big snowstorm of the season had arrived the day before, and there were several inches of fresh snow on the ground and more was predicted for the rest of the morning.  Temperatures were predicted to reach highs just below freezing.  Even while meeting in the parking lot, though, our efforts were already being rewarded: a flock of about 8 EVENING GROSBEAKS flew overhead while we were waiting to depart.

The roads were not too bad, and before not too long we arrived at the Antelope Island Causeway and saw the first effects of the shifting weather on the birds: the storm had pushed hundreds of LEAST SANDPIPERS to the causeway.  By counting a small group and estimating how many groups that size we saw along the causeway, we estimated 500-700 Least Sandpipers.  According to eBird, this is the highest single checklist count of this species in Utah since a 1974 count at Fish Springs National Wildlife Refuge. Among the Least Sandpipers we were able to pick out one WESTERN SANDPIPER, three GREATER YELLOWLEGS, and several hundred KILLDEER. We learned to identify the common GULLS of the area, and saw four species: RING-BILLED, CALIFORNIA, BONAPARTE'S, and HERRING. One GREAT HORNED OWL perched on the snow near the causeway was a highlight for the group.

A Great Horned Owl perched on the snow along the Antelope Island Causeway.  Ryan O'Donnell photo.

One of the big draws of Antelope Island is the chance of spotting rare vagrant ducks, and as usual, the famous second bridge didn't disappoint.  A HARLEQUIN DUCK was first found along the causeway about three weeks ago, and continued for us.  We were also able to find three SURF SCOTERS at the same location.

A Harlequin Duck continued to oblige along the Antelope Island Causeway.  Ryan O'Donnell photo.

Three Surf Scoters pose together nicely for a photo, with a Lesser Scaup in the background.  Ryan O'Donnell photo.

On the island itself, we started by driving up to the visitor's center for a bathroom break, but before we could make it there we found another rare bird for this time of year, a SAGE SPARROW.  We had brief looks at this bird up on top of a shrub before it dropped back down into the vegetation.

A late Sage Sparrow that should be migrating south soon.  Ryan O'Donnell photo.

At the visitor's center, the feeders gave us close looks at a DARK-EYED JUNCO, a CALIFORNIA QUAIL, and several CHUKAR.

A California Quail and a Chukar wait for their turn at the bird feeder at the Antelope Island Visitor's Center.  Ryan O'Donnell photo.

As we drove down the island towards historic Garr Ranch, we saw several more raptors, including ROUGH-LEGGED HAWKS and RED-TAILED HAWKS, and had a brief look at an unidentified SHRIKE.  We also added to our mammal list, with a COYOTE, many BISON, and very close looks at a herd of PRONGHORN.

A Pronghorn, part of a herd that blocked the road for a little while on our way out to Garr Ranch.  Ryan O'Donnell photo.

At Garr Ranch itself, we worked the trees around the spring and another pond to the south pretty thoroughly.  One of the first good birds here was a NORTHERN GOSHAWK right around the spring.  This species is very rare at Antelope Island - according to eBird this is only the second record for the park.  

An immature Northern Goshawk at Garr Ranch.  Mike Fish photo, used with permission.

Other raptors in the area included a RED-TAILED HAWK, an adult COOPER'S HAWK, a NORTHERN HARRIER, and this GREAT HORNED OWL, our second of the day.

Great Horned Owl at Garr Ranch.  Ryan O'Donnell photo.

The park ranger led us down to another small clump of Russian Olive trees where a very large MULE DEER buck had been hanging out.

A very large Mule Deer buck guards his harem at Garr Ranch.  Ryan O'Donnell photo.

Garr Ranch is famous as a migrant trap, a place where lost birds tend to show up when they get blown or wander off course.  We didn't find any great vagrants when we were there, but we did get some great looks at some common species, including this HERMIT THRUSH, and one out-of-season BROWN-HEADED COWBIRD.

One of two Hermit Thrushes at Garr Ranch.  This individual is pretty red, and I wonder if it might be in the eastern/northern subspecies group, rather than one of our local breeders.  Ryan O'Donnell photo.

A late Brown-headed Cowbird, or should I say "Brown-headed Horsebird?," found a warm place to perch in the snow at Garr Ranch.  Ryan O'Donnell photo.

Finally, before leaving the ranch, we checked the silo for BARN OWLS and came up with one.  Or, the wingtips and tail of one, at least!

"It counts."  These weren't the best looks one could hope for at a Barn Owl, but the wingtips and tail are distinctive enough to identify the bird.  Ryan O'Donnell photo.

We ended the trip at Garr Ranch, but had a few more sightings on the way back to Logan, including three or four COYOTES, a couple of PORCUPINES, and a LOGGERHEAD SHRIKE.  

Join us for our next trip, on December 8th, and for the Logan Christmas Bird Count on December 15th.  See our website for details on this and all future trips, and contact Bryan Dixon to sign up for the Christmas Bird Count at bdixon@xmission.com.

Here are links to the complete eBird checklists from our trip, including a few bonus photos:
http://ebird.org/ebird/view/checklist?subID=S12010993
http://ebird.org/ebird/view/checklist?subID=S12011069

http://ebird.org/ebird/view/checklist?subID=S12011125
http://ebird.org/ebird/view/checklist?subID=S12011165

Mexican Duck in Utah

Mexican Duck, Anas (platyrhynchos) diazi, at First Dam, Logan, Utah.  Copyright Ryan P. O'Donnell.  

If you follow Utah Birdtalk/Birdnet, you already know that on February 5th, about two weeks ago, my friend Craig Fosdick found a very interesting duck at First Dam in Logan, Utah.  It was a Mexican Duck; probably the northernmost record of the species, and only the third from Utah.  Mexican Ducks are easy to overlook, and many readers of this blog might have never heard of one before.  Even the experienced birders Craig was with at the time hardly gave this unique vagrant a second look.

First, what is a Mexican Duck?  That question is not easy to answer.  According to the American Birding Association and the American Ornithologists Union, it is a subspecies of Mallard.  But that view is considered by some to be antiquated and inaccurate.  Recent genetic work has shown that the Mexican Duck may actually be its own species, and it is at least as unique as several other species such as the Laysan Duck and the Mottled Duck.  The picture is complicated, however, because Mallards contain several genetic lineages, and thus to have species boundaries that reflect mitochondrial gene phylogenies, one would either have to split Mallards based on strictly genetics, or else consider "Mallards" to include Laysan Ducks, American Black Ducks, Mottled Ducks, and many others, which obviously does not reflect biology well.  This is an area that is in need of additional research, particularly in generating phylogenies and assessing hybridization with nuclear molecular markers.

Phylogeny of Mallard-group ducks, modified from Johnson and Sorenson 1999, based on mitochondrial DNA sequences.  Note that Mallards appear twice here, having (at least) two different mitochondrial sequences.  Also note that Mexican Ducks are as distinct from Mallards as many other groups that we know of as species.

The definition of species within the Mallard group is confusing, but perhaps even more so in the case of Mexican Ducks, because our understanding of this species is clouded by hybridization with Mallards in Arizona and New Mexico.  A classic study of morphology in Mexican Ducks found that there are virtually no pure Mexican Ducks anywhere in the species range, according to a numerical scale of morphology that ranges from pure Mexican Duck to pure Mallard.  However, an alternative interpretation of the same dataset is that our definition of what identifies a pure Mexican Duck is too narrow, and that pure Mexican Ducks can show traits that have once been taken to be indicative of Mallards.

With respect to the duck seen as recently as yesterday in Logan, this appears about as close to a pure Mexican Duck as one can expect at the northern part of the range of the (sub)species.  There is very little green on the head.  The bill is bright yellow.  The tail shows no patches of white.  The speculum has green iridescence, and is bordered only thinly by white.  The rump and undertail coverts match the flanks well in color, showing no obvious indication of the black that a male Mallard has in these areas.  The belly is dark, matching the color of the rest of the bird well.  The only part that seems to show some obvious Mallard ancestry is that the central retrices (tail feathers) curl up slightly off the plane of the tail, hinting at the curled central tail feathers of an adult male Mallard.  But, with how little we know of "pure" Mexican Ducks, perhaps this is not outside the range of variation shown by them?  Only an extensive study of morphological variation and nuclear DNA across the range of the Mexican Duck and Mallard can really address this question well.

The Mexican Duck looks a lot like a female Mallard, but darker and (in a male, such as this one) with a bright yellow bill.  Copyright Ryan P. O'Donnell.

The Mexican Duck's speculum has more of a green iridiscence, compared to the purple of a Mallard's, although the color varies somewhat with the angle of view.  Also note here how, unlike a male Mallard, the rump is about the same color as the flanks and the tail is dark, without white.  Copyright Ryan P. O'Donnell.

Unlike a Mallard, the lower belly is not noticeably paler than the flanks or breast.  The bright white underwing coverts are a trait shared by male Mexican Ducks and male Mallards.  Copyright Ryan P. O'Donnell.

This angle can be tough to see in the field, but it shows how the back of the Mexican Duck is generally dark, and the speculum is only thinly bordered by white, not boldly bordered by white like a Mallard's speculum.  Note that at this angle the speculum looks more purple than green, like a Mallard's.  Copyright Ryan P. O'Donnell.

As rare birds go, this individual might be pretty easy to find.  It has been seen over the last two weeks at First Dam in Logan.  Watch for a duck that looks a bit like a female Mallard, but is darker and has a bright yellow bill.  While I don't advocate feeding park ducks, it is a common practice at this park, and if you happen to time your visit when a local is feeding them, this duck might come right out in the open and fight with the other local domestic breeds for bread.  Otherwise, you might get lucky and see it swimming around on the water, or it might be sleeping on the far shore of the lake.  If it's not out in the open when you get there, try patiently scanning the sleeping ducks along the shoreline.

The Mexican Duck being seen at Logan's First Dam seems to have paired up with a female Mallard.  Note in this view how this Mexican Duck's central retrices lift slightly off the others, perhaps indicating a small amount of Mallard heritage.  Copyright Ryan P. O'Donnell.

Red-necked Grebe in Utah

On Saturday I got a call from Bob Atwood that he had just found a Red-necked Grebe at Hyrum Reservoir, about 20 minutes from my house in Logan. I was out of town at the time, but as soon as I got back the next day, yesterday, I headed down to see if I could find it. I set up my spotting scope on the dam where he had found the bird, and saw a tiny speck on the water about a quarter mile out. There were probably lots of other specks on the water, but luck was on my side and the first one I noticed was the target bird, my first Red-necked Grebe in Utah and my first anywhere in breeding plumage.

I drove around to the closest point on the shore to the bird, and couldn't find it. I was afraid it might have flown while I was driving, but it was also swimming pretty fast and I thought it might have just swam out of my view from that point, where trees were on either side of me and I could only see straight out from the shore. I drove back around near the dam, and saw the bird closer to me than I expected, and getting closer to shore. I climbed down the shore and scanned again for the bird. Just when I thought I lost it again, it resurfaced right in front of me! I got a few good shots then, and several more by running down the shoreline each time the grebe dove, and lying still on the rocks ahead of it before it resurfaced.

Red-necked Grebes have been seen several times in Utah, but they are very rare here. There are about a dozen previous records for the state, and most are of immatures or non-breeding adults in the winter. This bird was unique not only because it is so rare, but especially because it was in full breeding plumage. What a great bird!

(Photos copyright Ryan O'Donnell 2011)