December 30, 2011

Oldsquaw Twitching

Yesterday we "chased" an Oldsquaw, or to be more scientifically and politically correct, a Long-tailed Duck, Clangula hyemalis.  Though not particularly rare in Colorado,  this species has eluded us ever since we started birding.  I (Marcel) finally saw my lifer Long-tailed Duck in Maine this summer, but Joel had yet to see one.  Seizing the opportunity of visiting the Denver Art Museum, we took the short side trip to the Denver City Park to look for a long-staying immature male bird.  True to form, we easily found it in the Duck Pond behind the Denver Zoo, among the more common Mallards, Northern Shovelers, Redheads, Ring-necked Ducks, Common Goldeneyes, American Coots, and Canada Geese.

All photos by Joel Such

Canada Goose - 3000
American Wigeon - 4
Mallard - 16
Northern Shoveler - 8
Northern Pintail - 4
Redhead - 8
Ring-necked Duck - 14
Long-tailed Duck - 1
Bufflehead - 6
Common Goldeneye - 11
Pied-billed Grebe - 2
American Coot - 12
Ring-billed Gull - 35
Rock Pigeon - 3
Black-billed Magpie - 3
American Crow - 20
American Robin - 4
European Starling - 100
House Sparrow - 6

19 species

December 29, 2011

Fountain Creek CBC

It's 8 PM on December the 20th, and we're pulling up to the Sochi-Floyd house in Lafayette, Colorado.  Unrolling sleeping bags on their living room floor, we make last minute plans with Birding magazine editor Ted Floyd for our 4:30 AM departure for Colorado Springs and the Fountain Creek CBC.  For the past two years of doing this count with Ted, we have left around 3 AM in order to arrive in time to try for Western Screech-Owl.  With the 100% precedent of only seeing Great Horned Owls on these pitch dark outings, Ted decided to grant us all a couple of hours more sleep.

At 6:30 AM, we stepped out of the car in the parking lot of the Fountain Creek Regional Park's nature center, the sun still a good half-hour from breaking the horizon.  Accompanying a deep hoot, a large, broad-winged bird swooped up the river corridor to land in a nearby cottonwood.  "Leaving two hours late didn't cost us Great Horned Owl," I thought ruefully.  As the four of us (we picked up Allan Burns of the Springs en route) descended into the riparian corridor of Fountain Creek, the high-pitched, bell-like flight calls of American Tree Sparrows emanated from the surrounding brush along with the notes of Dark-eyed Juncos and White-crowned Sparrows.  The first of many, the husky chuck of a Song Sparrow came from the cattails lining one of the many ponds in the area.

All Photos By Joel Such

left to right: Allan Burns, Ted Floyd, Marcel Such

Throughout the course of the morning, we repeatedly traversed the two miles of river corridor assigned to us.  We puzzled over the many "White-cheeked" Geese in the area, weighing our opinions on the differences between the nearly identical "Lesser" Canada Goose and the Cackling Goose against each other.  The two Ross's Geese we found mixed in with the flocks of "Canadian Honkers" was a first for the count.  The Virginia Rail, Marsh Wren, and Swamp Sparrows we found in the cattails are species that are localized to this area during the winter.


Hooded Merganser


As the time for the midday compilation neared and we were forced to return to the nature center, I quickly counted up our list for the day.  I listed 48 species.  "We can't go back until we have fifty!" said Ted, half jokingly.  Unfortunately, there was really only one more potentially easy species, House Sparrows at the nature center feeders.  Sure enough, we found two of them feeding on the ground at the nature center.  Resigning ourselves to 49 species (we were already 15 minutes late), we pulled out our lunches and entered the nature center where the compilation was being held.  Halfway through the reading of the list by compiler Dan Maynard, Allan started pointing out the window and saying "Ted!  Ted, look!  Look up there!"  Sure enough, a male Harris's Sparrow was feeding under the feeders right outside the window.  50.  And then, at the end of the compilation, somebody else started pointing out the window and saying, "That's a weird looking White-crowned Sparrow."  With many people now gawking through the window, it turned out that it was actually a White-throated Sparrow, yet a new species for the day, and our final.

Harris's Sparrow

Ross's Goose - 2
Cackling Goose - 20
Canada Goose - 904
Gadwall - 25
American Wigeon - 8
Mallard - 92
Northern Shoveler - 25
Green-winged Teal - 28
Ring-necked Duck
Lesser Scaup - 1
Hooded Merganser - 12
Common Merganser - 3
Pied-billed Grebe - 12
Great Blue Heron - 1
Northern Harrier - 1
Sharp-shinned Hawk - 1
Red-tailed Hawk - 4
Virginia Rail - 1
American Coot - 18
Killdeer - 6
Rock Pigeon - 2
Eurasian Collared-Dove - 1
Great Horned Owl - 1
Belted Kingfisher - 4
Downy Woodpecker - 6
Hairy Woodpecker - 1
Northern Flicker - 7
Black-billed Magpie - 3
American Crow - 12
Common Raven - 1
Horned Lark - 40
Black-capped Chickadee - 19
White-breasted Nuthatch - 5
Brown Creeper - 4
Marsh Wren - 1
European Starling - 45
American Pipit - 2
American Tree Sparrow - 16
Song Sparrow - 33
Swamp Sparrow - 2
Harris's Sparrow - 1
White-throated Sparrow - 1
White-crowned Sparrow - 34
Dark-eyed Junco (undifferentiated) - 24
          Slate-colored - 40
          Cassiar - 1
          Oregon - 3
          Pink-sided - 13
Red-winged Blackbird - 68
Western Meadowlark - 1
House Finch - 55
Pine Siskin - 1
American Goldfinch - 6
House Sparrow - 2

51 species

December 28, 2011

Mount Sanitas and the Boulder Christmas Bird Count

The 2011 Mount Sanitas CBC Crew
Left to right: Skye Lewis, Marcel Such, Levi Stone, Joel Such

On Sunday, December 18th, we hit the trails of Mount Sanitas for the Boulder Christmas Bird Count.  Though a rather small area for the Boulder circle, this area can take all day because of the miles of trail needing to be covered, and only a tiny section of road in one corner, which de-marks one of the easier habitats to cover, the foothill's suburbs.  Elsewhere, it is foothills Ponderosa Pine forest, with some scattered Wild Plum riparian areas.  These habitats don't have as high a density of birds - typically just a handful of roving wintering flocks of juncos, chickadees, and nuthatches, plus some scattered jays and woodpeckers - but that makes it all the more difficult to obtain accurate counts.  For the previous two years we have covered this area by ourselves, but this year we joined forces with the newly formed Boulder County Audubon Teen Naturalists' program for a great day of hiking and birding.

All photos by Joel Such

Levi Stone on Mount Sanitas against a backdrop of Boulder

The Dakota Ridge Hogback

Sanitas Valley Trail

Black-billed Magpie

American Kestrel

American Robin

Red-tailed Hawk

Golden Eagle

Bushtit (we saw these little guys everywhere!)

Eastern Bluebird (see note below)

(previous years totals in parenthesis)
Canada Goose - 1 (3) 
Sharp-shinned Hawk - 2
Northern Goshawk - 1 flying through Sanitas Valley. 
Red-tailed Hawk - 4 (5) 
Golden Eagle - 1 (1)
American Kestrel - 2 (2)
Rock Pigeon - 43 (28)
Eurasian Collared-Dove - 3 
Downy Woodpecker - 2 (1)
Hairy Woodpecker - 2 (3)
Northern "Red-shafted" Flicker - 12 (12)
Steller's Jay - 39 (35)
Western Scrub-Jay - 3 (3)
Black-billed Magpie - 38 (27)
American Crow - 21 (210!)
Common Raven - 17 (6)
Black-capped Chickadee - 7 (7)
Mountain Chickadee - 14 (16)
Bushtit - 52 (28)
White-breasted Nuthatch - 9 (3)
Pygmy Nuthatch - 71 (39)
Brown Creeper - 4 (2)
Canyon Wren - 2 (1)
Ruby-crowned Kinglet - 1 (2) 
Eastern Bluebird - 1 male, we typically see Western Bluebirds in this area, which is what we originally identified this bird as.  Looking at photographs that Joel took, however, caused us to doubt this assumption.  The correct identification was actually Eastern.  We did not obtain any pictures of the female, so we cannot be certain of its identification.
Bluebird species - 1 female
Townsend's Solitaire - 37 (30)
American Robin - 48 (2)
European Starling - 13 (1)
Spotted Towhee - 17 (1)
Dark-eyed Junco (total) - 129 (167)
     undifferentiated - 56 (71)
     Gray-headed - 34 (62)
     Oregon - 2 (3)
     Pink-sided - 24 (22)
     Slate-colored - 13 (9)
House Finch - 44 (65)
House Sparrow - 12

32 species

December 27, 2011

Longmont Christmas Bird Count

To kick off the Christmas Bird Count (CBC) season, we participated in the Longmont count circle with Bryan Guarente on Dec. 17th.  Our plan for the day was to hike a bit of Hall Ranch and spend the rest of the day trekking through the partially frozen Saint Vrain River in waders.
At Hall Ranch, we hiked one and a half miles through the juniper scrubland picking up many Western Scrub-Jays (12) and Townsend's Solitaires (22), plus a Spotted Towhee meowing in the shrubs and a male Cassin's Finch amongst the numerous House Finches.

Hall Ranch

We covered four miles of river from the intersection of Highways 36 and 66 (just east of Lyons, CO) to half way up Apple Valley Road (northwest of town).

One of 18 American Dippers seen up the river.

Left to right: Marcel Such, Joel Such, and Bryan Guarente 

This video will give you a good idea of what it was like to walk through some parts of the river.

After our excursion on the river, we drove around the remaining area including the Lyons Cemetery (1 Merlin), and up Red Gulch Road (19 Wild Turkeys).


Bird Count:
Mallard – 10 in the river.
Wild Turkey – 19 in the tops of trees at the bottom of Red Gulch Road.
Sharp-shinned Hawk – fly-by.
Cooper’s Hawk – along the river.
Bald Eagle – immature on the foothills highway, and adult flying low over the river.
Golden Eagle – perched on the sandstone cliffs of Steamboat Mountain.
Red-tailed Hawk – seen here and there.
Harlan’s Hawk – perched on a power pole along the Foothills Highway.
American Kestrel – 11 mostly along the Foothills Highway.
Merlin – perched in the top of a backyard tree near the Lyons Cemetery.
Rock Pigeon – 47 along the Foothills Highway.
Eurasian Collared-Dove – 27 around the Lyons Cemetery.
Belted Kingfisher – along the river.
Downy Woodpecker – 7
“Red-shafted” Flicker – 21
Steller’s Jay – on Twilight Road and Hall Ranch.
Blue Jay – along the river.
Western Scrub-Jay – 13 at Hall Ranch.
Black-billed Magpie – 32 along the Foothills Highway and Hall Ranch
American Crow – or so heard only.
Common Raven – 13 along the river.
Black-capped Chickadee – 24 mostly along the river.
White-breasted Nuthatch – at Hall Ranch.
Brown Creeper – along Apple Valley Road.
Canyon Wren – on the sandstone cliffs of Meadow Park.
Winter Wren – at the very south end of Apple Valley Road along the river.
American Dipper – 18 along the river (last year’s dipper count was over 40).
Ruby-crowned Kinglet – along Apple Valley Road.
Townsend’s Solitaire – 44 mostly at Hall Ranch with a few along the river.
American Robin – 163
European Starling – 54 in the town of Lyons.
Spotted Towhee – at Hall Ranch.
American Tree Sparrow – mixed in with flocks of juncos.
Song Sparrow – along the river.
White-crowned Sparrow – in with the mixed sparrow flocks along the river.
Dark-eyed Junco – 127
   Unidentified – 28
   Pink-sided – 60
   Slate-colored – 22
   Oregon – 16
   Gray-headed – 1
Red-winged Blackbird – along the Foothills Highway.
Cassin’s Finch – at Hall Ranch.
House Finch – 96
American Goldfinch – along the river.
House Sparrow – 18 in Lyons.

December 12, 2011

Check out the Yard Moth Challenge!

Check out the Yard Moth Challenge blog (, where I (Marcel) have recently started contributing.

Hypercompe permaculata (Many-spotted Tiger Moth)

December 10, 2011

Boulder County Audubon Teen Naturalists - Winter Raptors

This morning was the Boulder County Audubon Teen Naturalists' inaugural event, a wintering raptor survey in Boulder County.  With three participants - myself, Joel, and Skye Lewis - and our able guides Steve Jones and Sarah Bexell, it was a great beginning of what looks to be an excellent group.

Left to right:  Sarah Bexell, Marcel Such, Skye Lewis, Steve Jones, Joel Such
photo by David Such

We surveyed Boulder County Nature Associations' South Rabbit Mountain route north of Boulder, and had a good number of hawks, kestrels, and eagles, marking the locations of the birds on a topographical map for a county-wide database of such sightings.  And though raptors were our main focus, we also enjoyed the other wintering bird species that we happened across.  As we gathered back at our meeting point, Joel spotted an adult Bald Eagle flying over, a fit end to a wonderful morning.  Too bad it wasn't countable for the survey!

photo by Joel Such

Immature Ferruginous Hawk
photo by Marcel Such

Male American Kestrel
photo by Joel Such

"White-cheeked" Goose - 100
Red-tailed Hawk - 12 (including one dark-morph bird, and one eastern borealis bird)
Ferruginous Hawk - 3 (the most I've ever seen in the county on one day)
Golden Eagle - 1
American Kestrel - 12
Rock Pigeon - 10
"Red-shafted" Northern Flicker - 1
Blue Jay - 2
Black-billed Magpie - 6
Common Raven - 2
American Robin - 2
European Starling - 60
Dark-eyed Junco - 6
Red-winged Blackbird - 5
American Goldfinch - 6

16 species