Showing posts with label american. Show all posts
Showing posts with label american. Show all posts

Sunday, 18 November 2012

Citrine Wagtail Twitch!

Citrine Wagtail (Motacilla citreola) had only knowingly graced North American soil once before November 14th, 2012.  The first record was a mind-boggling two-day affair from Starkville, Mississippi just over 20 years ago.  On the 14th, Dave and Adele Routledge decided to check the birds down a seemingly random farm road in the Comox Valley.  The whole Comox Valley looks great for birding, with the Courtenay River Estuary being one of the most obvious features.  Why Dave and Adele chose to head to the other side of Comox Rd. that day and head down that dirt lane is a mystery, but they were amply rewarded for thinking outside the box!  Having experienced Yellow Wagtail some 50 years ago back in England, Dave knew he was looking at a wagtail when he found an unusual grey-and-white bird bobbing its tail.  He made several keen observations and presumed it was a Yellow Wagtail.  The description left no doubt that he had observed a wagtail, but no diagnostic features that separated it from other wagtails were mentioned.  I felt obliged to inquire why he thought it was a Yellow - an Eastern Yellow Wagtail (M. tschutschensis) to be precise with modern taxonomy - and not one of other potential options.  I mentioned Grey Wagtail (M. cinerea) and White Wagtail (M. alba) as other likely candidates to show up, but didn't even think of adding Citrine to the mix as it had never been recorded in Alaska.

Dave decided he had better go back out and go over the identification in greater detail.  Amazingly, he returned to the wagtail's original location two days later and managed to relocate it.  After longer looks in better light, the identification shifted towards the White Wagtail camp based on the more plain-faced appearance, grey back, two broad white wing bars, and white forehead.  The feature that didn't add up for White, though, was the lack of any kind of black markings on the chest.  At this point, no photos had been taken but the shifted identification and up-to-date sighting put a handful of birders into action the next day.  Mike Bentley was one of the few that made the journey and he came prepared with his camera and finally the bird was documented!  Once the photos were posted to BCVIBIRDS, the real excitement began.  Word soon spread that this looked like a classic 1st-winter Citrine Wagtail.  I grabbed my Birds of East Asia field guide, thumbed through to the wagtails, and could immediately tell why I couldn't come to grips with the bird being one of three more expected wagtail species.  CITRINE... expletive deleted... WAGTAIL!

Luckily I had already made travel arrangements to go up and see the wagtail.  Jeremy Kimm and I had just attempted a big day on Saturday and decided rest was for the weak.  He was a real trooper and picked me up at 5 a.m. even though I was the wrong direction.  We picked up his brother, Jason, in Duncan on the way up to the Comox Valley and the three of us were on location just after 8:30 a.m.  I rarely make my way up to the Comox Valley, so I was able to put some unfamiliar faces to familiar names as Dave Robinson, Art Martell, and Terry Thormin were there scouring the area for the wagtail.  Additionally, one familiar-yet-enigmatic face was in attendance as Keith Taylor had made the drive up the night before to be there for first light, and Mike Yip was sporting the long lens in hopes of getting some primo documentation.  They informed us they had not yet located the wagtail.  That all changed five minutes later when Art scanned around edge of the southwest corner of the field.  I was right alongside Art when he exclaimed "There it is!"  He notified the others and soon we were all taking in full frame views of the bird in our scopes!

The field marks were all there for a 1st-winter Citrine Wagtail: white completely framing its grizzled auriculars, a clean grey back with no hints of olive or brown, white supercilia connected by white over the bill, immaculate white undertail coverts, and two bold, white wing bars.

The next task was to get some photos to document the bird.  After all, we were dealing with a first Canadian and second confirmed North American record.  The bird was quite cooperative and everyone was very respectful of the bird's space, knowing that birders from the Lower Mainland were on their way.  Eventually I managed to get some decent shots when the Citrine Wagtail was at its closest.  I even took some poor footage of the bird to document its call.  Later we were joined by a half-dozen or more Lower Mainland birders that made the ferry trip over and, needless to say, they were happy twitchers!  I don't think I need any more commentary on this amazing bird, but I will close this out with a big congratulations to Dave and Adele Routledge for their amazing find!






Giant crowd... from a British Columbia perspective!

My recording was sent to Brent Beach and Ian Cruickshank to try to enhance its quality.  Ian kindly put the recording up on xeno-canto and I managed to figure out how to embed it here:


The above recording has a bland X-ray style sonogram, but you can enjoy Ian's Amazing Technicolor Dream Sonogram below:


Sunday, 11 November 2012

Swan Song

On Saturday I decided to get out check some of the local flats to check of the waterfowl numbers and diversity.  In the last few weeks there has been multiple reports of Tundra Swans (Cygnus columbianus) and there were other sightings involving Redheads (Aythya americana), Canvasbacks (Aythya valisineria), and Ruddy Ducks (Oxyura jamaicensis).  This was motivation enough for me to see what I could turn up close to home.

I started off at Tod Creek Flats behind the Red Barn Market on West Saanich Rd.  As I came down the hill towards the Red Barn Market, I could see the number of large white dots on the water had gone up significantly in the last week.

The bustle of waterfowl on Tod Creek Flats is accentuated by a picture perfect fall scene with loaded hawthorn shrubs, dead grasses, and turning leaves contrasting the evergreen wall of conifers.

I was excited to get out and sort through those large white dots to see how many were Tundra Swans.  The last Victoria checklist was produced in 2001 and it asserts that Tundra Swans as rare for this area, which means they are annual but typically limited to a few records.  I think the timing of rainfall this fall has resulted in higher-than-average numbers in our area.  The first report this fall came from Ian Cruickshank on October 23rd when he noted nine Tundras (4 adults, 5 juveniles) flying over the appropriately named Swan Lake.  These birds landed on Viaduct Ducts where they were enjoyed by many Victoria birders.  On October 31st, Mike McGrenere noted a flock of 17 adult Tundras passing west over Martindale Flats and the next day he found a group of nine resting on the fields at Martindale that likely constituted a different flock.  Considering Mike is one of the most active birders in Victoria, this quote from BCVIBIRDS says it all: "I think this must be close to the number that I have seen in Victoria since I moved here in 1985."  I don't get to study Tundra Swans very often, so that puts my excitement in perspective.  I was not hoping to find a Tundra, I was expecting it!

Spoiler alert!  Yes I did see some Tundras!  The front and centre cygnet and adult are Tundra Swans.  Compare them to the back right cygnet and adult Trumpeter Swans (Cygnus buccinator).  When adult Tundras have a yellow spot in front of their eye, they are much easier to identify as you can see here.  The juvenile Tundra has a bill that is largely pink, including the base and sometimes extending into the lores.

Almost immediately I spied my first Tundra.  In fact, it turned out to be a group of five.  There were three adults and two juveniles travelling together.  I looked through the whole flock twice and found four more adults, making a total of nine Tundra Swans mixed in with 50 Trumpeters.  There are many subtle features involving the bill that can be used to the separate the two species.  If you're interested in learning more about distinguishing these two species, please check out this swan identification article by David Sibley from his blog.  I spent a fair amount of time scanning through the ducks after sifting through the swans and was tickled to hear the Tundras making their higher-pitched honks for several minutes.  It was a perfect encounter!

I estimated there were more than 2500 waterfowl out on Tod Creek Flats, and you can see the breakdown of that from my eBird checklist here.  I thought I heard Greater White-fronted Geese (Anser albifrons) when I first arrived and eventually tracked one down.  As you may have seen from the checklist, it turned out there was actually a flock of 14 that I was able to observe after they flushed, circled the flats a couple times, then settled back on the water.  I was also pleased to pick out three male Eurasian Wigeons (Anas penelope) amongst the American Wigeons (Anas americana).

Flock of Greater White-fronted Geese about to land on Tod Creek Flats

I went to Viaduct Flats next as there had already been one report of Redheads this fall from Duncan and Viaduct was the location I last saw them in Victoria.  These hunches occasionally work out and this was one of those times.  In with the mix of diving and dabbling ducks were three Redheads and ten Canvasbacks!

I had hour-long birding sessions at Hastings Flats and Tower Point afterwards and just saw a nice variety of the usual suspects.  The only bird I don't encounter all too often that I came across was a male Red-breasted Sapsucker near the parking lot at Tower Point.  I ended the day with 78 species, which was a little surprising considering I wasn't specifically trying to amass a high species total for the day.  I think a big day could easily churn out over 100 species right now.  I do believe a certain Victoria birder with a blog about unsuccessful big years was prodding me to do a November big day.  Maybe that's on the horizon?

Sunday, 21 October 2012

Crosses and Crossbills

I'm back on familiar birding grounds and making up for lost time.  On Friday, I stopped in at the Vantreight bulb fields and had my first self-found Yellow-headed Blackbird (Xanthocephalus xanthocephalus) in a sizable blackbird flock and yesterday (Saturday) I met up with Jeremy K. and did the Sooke-Metchosin-Esquimalt circuit to see if we could turn up any interesting fall birds.

Our day started with a frigid stroll to the tip of Whiffin Spit and back.  This walk always seems to be the football equivalent of a Hail Mary pass - nine times out of ten it doesn't pan out, but the rewards are huge for the one time you make the pass.  Today was not the big payoff we had hoped.  Bird activity was plentiful with flocks of Zonotrichia sparrows, but we just couldn't seem to dig out anything unusual.  We did manage to start a running theme for the day here when we saw a Sharp-shinned Hawk (Accipiter striatus) cruise over, followed by a few Bald Eagles (Haliaeetus leucocephalus), and a Merlin (Falco columbarius) zipped through in pursuit of a morning meal.  Every stop hereafter we managed to see a raptor of some sort.

A stop in at the Goodrich Peninsula wasn't quite as brisk as Whiffin, but the level of success was similar.  My personal highlights for this stop were a lone Bonaparte's Gull (Chroicocephalus philadelphia) flying over the marina and a flock of Black Turnstones (Arenaria melanocephala) and Surfbirds (Aphriza virgata) on the floating logs by the docks.

We continued on to Metchosin via Lindholm Rd. and stopped to check out the small farm pond near the Galloping Goose crossing.  The pond was quiet but we located a huge, uncooperative blackbird flock.  We only managed short, partial views of the flock and consequently came up empty.

The best stop of the day was Swanwick Rd.  We started with a nice flock of geese on the main field, which contained 26 Greater White-fronted Geese (Anser albifrons) and 30 Cackling Geese (Branta hutchinsii) in with the usual Canada Geese (B. canadensis).

Three species of goose in one flock is always a nice sight!

My personal highlight for the day came next as three Red Crossbills (Loxia curvirostra) descended from the top of a conifer to a couple of puddles right in front of us.  I believe it was a family group as there was a single juvenile bird with an adult male and female.

The male Red Crossbill is the reddish bird with dark wings, while the streaky, olive-infused is a juvenile.

Here's a better look at the streaky appearance of the juvenile Red Crossbill.

This is the female Red Crossbill and she is really showing off her namesake crossed bill!

Swanwick Rd. was also our best raptor location of the day with two Red-tailed Hawks (Buteo jamaicensis), a Sharp-shinned Hawk, a Cooper's Hawk (Accipiter cooperi), a Peregrine Falcon (F. peregrinus), and seven Turky Vultures (Cathartes aura).

After a rather fruitless stop in at Albert Head Lagoon, we finished our day off at Esquimalt Lagoon.  The high  tide limited the amount of birds along the shore and the close flocks of ducks and gulls all seemed to be at the north end of the lagoon.  We were starting to study a male Eurasian x American Wigeon (Anas penelope x A. americana) when a Bald Eagle put all the birds.  I managed one distant shot that shows some of the key characteristics, including mottled grey and pinky-brown flanks and oddly-coloured head pattern.

Note the male's (right) largely grey flanks which is a feature of a Eurasian Wigeon, whereas the head pattern is closer to that of an American Wigeon.  This bird looks much less Eurasian-like than most reported hybrids.

After the dust settled from the eagle stir-up, I noticed an adult Thayer's Gull (Larus thayeri) had landed on the shore.  Shortly after, I found a nice American Herring x Glaucous-winged Gull hybrid (L. smithsonianus x L. glaucescens).  After commenting on its identification to Jeremy K., a classic adult Western x Glaucous-winged Gull (L. occidentalis x L. glaucescens) joined the other bird.  I couldn't pass up the opportunity to photograph the two side by side!

The dove-headed look is a good way to distinguish Thayer's Gulls from the more block-headed American Herring Gulls.  With experience, this species is not too hard to identify (with exceptions of course) but it is hard to tell you exactly why it is a Thayer's and not one of superficially similar species.

The left bird is a typical Western x Glaucous-winged Gull based on the mottled head and not overly dark mantle, while the right bird appears to be an American Herring x Glaucous-winged Gull due to the slight fading to the primaries and dark eyes.

Here is a closer view of the American Herring x Glaucous-winged Gull hybrid, which shows the slight fading in the primaries mentioned above.  The structure of this bird is more representative of its American Herring side as it is more slender than you'd expect for a Glaucous-winged.

That's all I have from this weekend's outings.  I hope to get out during the week, but whether I'll have anything worthy of posting is another story altogether!