[cobirds] Common gallinule (Larimer County)

[Nicholas Komar]

The common gallinule just made an appearance in the usual spot between 4:40 and 
4:45 PM today. Good spot by Dean Shoup. 

Nick Komar
Fort Collins CO

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[cobirds] Dickcissels A Plenty

[mvjohnski]

Got a report this week that a couple of Dickcissels were seen on Rd CC and 
Rd 22 south of Alamosa. There were less numbers than last year however. 

Today I took a bike ride and encountered no less than 12 Dickcissels on 
Swede Lane, which is 2 miles north of Monte Vista on Hwy 285 (Rio Grande 
County). Swede Lane travels west and watch the hayfields on the north side 
of the road as well as fence posts and power poles. easy to find at the 
moment although hay cutting is commencing. In spite of the drought, pretty 
good numbers of this species once again. Will check other locations to see 
how they fare as well. 

Wonder how smoke affects birds. On east winds , the Spring Fire has us 
coughing and on westerly, the 416 Fire. 

John Rawinski
>From occasionally smoky Monte Vista, Colorado




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Re: [cobirds] Nesting Cordies, But... - Cenntennial (Arapahoe)

[Charles Hundertmark]

Great monitoring and documentation.

Chuck Hundertmark

> On Jul 7, 2018, at 11:56 AM, Jared Del Rosso  wrote:
> 
> 
> For the better part of a month, Cynthia Madsen, Mary O’Connor, and I have 
> been dutifully watching a Cordilleran Flycatcher pair apparently nesting 
> along the Little Dry Creek in Centennial, CO (Arapahoe, approx. 5475’). Our 
> visits weren’t daily, but they were nearly so, and we’ve been rewarded with 
> the opportunity to observe the pair’s behavior as the apparent nest went 
> along.
> 
>  
> I say apparent because we never found the nest, which we think / thought was 
> under a bridge over the creek. We inferred from changes in behavior – the 
> male ceasing to sing regularly, the female remaining out of sight most of the 
> time, the female reappearing to make food runs, those food runs increasing in 
> frequency – that nesting was occurring. The timeline of these shifts in 
> behavior roughly corresponded to the timeline we calculated based on Atlas 
> data about Cordy nesting.
> 
>  
> There was definitely a nest, we now know. Today, when I arrived at the 
> nesting location, I was thrilled to hear some apparent begging calls from 
> near the bridge. The pair continually visited the location with food. And 
> then, from some movement near the apparent parents, a fledgling emerged: 
> cowbird.
> 
>  
> We’d worried about cowbirds but hoped that the likely location of the nest – 
> under the bridge – would protect against that. It’s possible that the nest, 
> in fact, was near but not under the bridge – or that it was under a sort of 
> “eave” around the bridge. Or it’s just possible that a female cowbird found 
> the nest under the bridge.
> 
>  
> A small, not-quite-consolation: the Cordy feeding behavior was interesting 
> today. Previously, they had been flycatching in a Peachleaf Willow and 
> downstream from the bridge, out of view. Today, they did much more 
> flycatching nearer the bridge, where the fledgling cowbird was. Specifically, 
> I saw several efforts to nab insects from the ground.
> 
>  
> Here’s the timeline of our observations, keeping in mind we didn’t make daily 
> visits, nor were our visits always at the same time of day. And some were 
> relatively brief (20-30 minutes).
> 
>  
> 5/24 – Male present
> 
> 6/6 – Female arrives
> 
> 6/7 – Female carrying nesting material
> 
> 6/23 (or so) – Male singing slows
> 
> 6/27 – Female carrying food – one run observed; not apparent if female ate or 
> fed food.
> 
> 6/28 – Female leaving nest more frequently on food runs
> 
> 7/7 – Cowbird fledgling near bridge, fed by Cordy pair (definitely by female, 
> possibly by male).
> 
>  
> Not the outcome I was hoping for, but so it goes.
> 
>  
> - Jared Del Rosso
> 
> Centennial, CO
> 
> 
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Re: [cobirds] Nesting Cordies, But... - Cenntennial (Arapahoe)

[David Suddjian]

In a word, yes. The Cowbird fledgling might be all that is successful. There 
are many aspects of the parasitism that can reduce host success. Female 
cowbirds may remove a host egg. The cowbird chick is often much larger than the 
host chicks and outcompetes in the nest. And more.

David Suddjian
Ken Caryl Valley
Littleton, Co

Sent from my iPhone

> On Jul 7, 2018, at 12:04 PM, Patrick O'Driscoll  wrote:
> 
> Fascinating, Jared.
> So, you didn't mention Cordy "siblings." No sign of any others?
> I'm ignorant about the dynamics, but once hatched, do cowbird surrogate 
> chicks outcompete their host nestmates to the point that they end up being 
> the "only child"?
>  
> 
>> On Sat, Jul 7, 2018 at 11:56 AM, Jared Del Rosso  
>> wrote:
>> For the better part of a month, Cynthia Madsen, Mary O’Connor, and I have 
>> been dutifully watching a Cordilleran Flycatcher pair apparently nesting 
>> along the Little Dry Creek in Centennial, CO (Arapahoe, approx. 5475’). Our 
>> visits weren’t daily, but they were nearly so, and we’ve been rewarded with 
>> the opportunity to observe the pair’s behavior as the apparent nest went 
>> along.
>> 
>>  
>> 
>> I say apparent because we never found the nest, which we think / thought was 
>> under a bridge over the creek. We inferred from changes in behavior – the 
>> male ceasing to sing regularly, the female remaining out of sight most of 
>> the time, the female reappearing to make food runs, those food runs 
>> increasing in frequency – that nesting was occurring. The timeline of these 
>> shifts in behavior roughly corresponded to the timeline we calculated based 
>> on Atlas data about Cordy nesting.
>> 
>>  
>> 
>> There was definitely a nest, we now know. Today, when I arrived at the 
>> nesting location, I was thrilled to hear some apparent begging calls from 
>> near the bridge. The pair continually visited the location with food. And 
>> then, from some movement near the apparent parents, a fledgling emerged: 
>> cowbird.
>> 
>>  
>> 
>> We’d worried about cowbirds but hoped that the likely location of the nest – 
>> under the bridge – would protect against that. It’s possible that the nest, 
>> in fact, was near but not under the bridge – or that it was under a sort of 
>> “eave” around the bridge. Or it’s just possible that a female cowbird found 
>> the nest under the bridge.
>> 
>>  
>> 
>> A small, not-quite-consolation: the Cordy feeding behavior was interesting 
>> today. Previously, they had been flycatching in a Peachleaf Willow and 
>> downstream from the bridge, out of view. Today, they did much more 
>> flycatching nearer the bridge, where the fledgling cowbird was. 
>> Specifically, I saw several efforts to nab insects from the ground.
>> 
>>  
>> 
>> Here’s the timeline of our observations, keeping in mind we didn’t make 
>> daily visits, nor were our visits always at the same time of day. And some 
>> were relatively brief (20-30 minutes).
>> 
>>  
>> 
>> 5/24 – Male present
>> 
>> 6/6 – Female arrives
>> 
>> 6/7 – Female carrying nesting material
>> 
>> 6/23 (or so) – Male singing slows
>> 
>> 6/27 – Female carrying food – one run observed; not apparent if female ate 
>> or fed food.
>> 
>> 6/28 – Female leaving nest more frequently on food runs
>> 
>> 7/7 – Cowbird fledgling near bridge, fed by Cordy pair (definitely by 
>> female, possibly by male).
>> 
>>  
>> 
>> Not the outcome I was hoping for, but so it goes.
>> 
>>  
>> 
>> - Jared Del Rosso
>> 
>> Centennial, CO
>> 
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> 
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Re: [cobirds] Nesting Cordies, But... - Cenntennial (Arapahoe)

[Patrick O'Driscoll]

 Fascinating, Jared.
So, you didn't mention Cordy "siblings." No sign of any others?
I'm ignorant about the dynamics, but once hatched, do cowbird surrogate
chicks outcompete their host nestmates to the point that they end up being
the "only child"?

Patrick O'Driscoll
Denver

On Sat, Jul 7, 2018 at 12:04 PM, Patrick O'Driscoll 
wrote:

> Fascinating, Jared.
> So, you didn't mention Cordy "siblings." No sign of any others?
> I'm ignorant about the dynamics, but once hatched, do cowbird surrogate
> chicks outcompete their host nestmates to the point that they end up being
> the "only child"?
>
>
> On Sat, Jul 7, 2018 at 11:56 AM, Jared Del Rosso  > wrote:
>
>> For the better part of a month, Cynthia Madsen, Mary O’Connor, and I have
>> been dutifully watching a Cordilleran Flycatcher pair apparently nesting
>> along the Little Dry Creek in Centennial, CO (Arapahoe, approx. 5475’). Our
>> visits weren’t daily, but they were nearly so, and we’ve been rewarded with
>> the opportunity to observe the pair’s behavior as the apparent nest went
>> along.
>>
>>
>>
>> I say apparent because we never found the nest, which we think / thought
>> was under a bridge over the creek. We inferred from changes in behavior –
>> the male ceasing to sing regularly, the female remaining out of sight most
>> of the time, the female reappearing to make food runs, those food runs
>> increasing in frequency – that nesting was occurring. The timeline of these
>> shifts in behavior roughly corresponded to the timeline we calculated based
>> on Atlas data about Cordy nesting.
>>
>>
>>
>> There was definitely a nest, we now know. Today, when I arrived at the
>> nesting location, I was thrilled to hear some apparent begging calls from
>> near the bridge. The pair continually visited the location with food. And
>> then, from some movement near the apparent parents, a fledgling emerged:
>> cowbird.
>>
>>
>>
>> We’d worried about cowbirds but hoped that the likely location of the
>> nest – under the bridge – would protect against that. It’s possible that
>> the nest, in fact, was near but not under the bridge – or that it was under
>> a sort of “eave” around the bridge. Or it’s just possible that a female
>> cowbird found the nest under the bridge.
>>
>>
>>
>> A small, not-quite-consolation: the Cordy feeding behavior was
>> interesting today. Previously, they had been flycatching in a Peachleaf
>> Willow and downstream from the bridge, out of view. Today, they did much
>> more flycatching nearer the bridge, where the fledgling cowbird was.
>> Specifically, I saw several efforts to nab insects from the ground.
>>
>>
>>
>> Here’s the timeline of our observations, keeping in mind we didn’t make
>> daily visits, nor were our visits always at the same time of day. And some
>> were relatively brief (20-30 minutes).
>>
>>
>>
>> 5/24 – Male present
>>
>> 6/6 – Female arrives
>>
>> 6/7 – Female carrying nesting material
>>
>> 6/23 (or so) – Male singing slows
>>
>> 6/27 – Female carrying food – one run observed; not apparent if female
>> ate or fed food.
>>
>> 6/28 – Female leaving nest more frequently on food runs
>>
>> 7/7 – Cowbird fledgling near bridge, fed by Cordy pair (definitely by
>> female, possibly by male).
>>
>>
>>
>> Not the outcome I was hoping for, but so it goes.
>>
>>
>>
>> - Jared Del Rosso
>>
>> Centennial, CO
>>
>> --
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>> gid/cobirds/131f3130-727e-45aa-8b1d-ba08117a5dae%40googlegroups.com
>> 
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
>
>

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Re: [cobirds] Nesting Cordies, But... - Cenntennial (Arapahoe)

[Patrick O'Driscoll]

Fascinating, Jared.
So, you didn't mention Cordy "siblings." No sign of any others?
I'm ignorant about the dynamics, but once hatched, do cowbird surrogate
chicks outcompete their host nestmates to the point that they end up being
the "only child"?


On Sat, Jul 7, 2018 at 11:56 AM, Jared Del Rosso 
wrote:

> For the better part of a month, Cynthia Madsen, Mary O’Connor, and I have
> been dutifully watching a Cordilleran Flycatcher pair apparently nesting
> along the Little Dry Creek in Centennial, CO (Arapahoe, approx. 5475’). Our
> visits weren’t daily, but they were nearly so, and we’ve been rewarded with
> the opportunity to observe the pair’s behavior as the apparent nest went
> along.
>
>
>
> I say apparent because we never found the nest, which we think / thought
> was under a bridge over the creek. We inferred from changes in behavior –
> the male ceasing to sing regularly, the female remaining out of sight most
> of the time, the female reappearing to make food runs, those food runs
> increasing in frequency – that nesting was occurring. The timeline of these
> shifts in behavior roughly corresponded to the timeline we calculated based
> on Atlas data about Cordy nesting.
>
>
>
> There was definitely a nest, we now know. Today, when I arrived at the
> nesting location, I was thrilled to hear some apparent begging calls from
> near the bridge. The pair continually visited the location with food. And
> then, from some movement near the apparent parents, a fledgling emerged:
> cowbird.
>
>
>
> We’d worried about cowbirds but hoped that the likely location of the nest
> – under the bridge – would protect against that. It’s possible that the
> nest, in fact, was near but not under the bridge – or that it was under a
> sort of “eave” around the bridge. Or it’s just possible that a female
> cowbird found the nest under the bridge.
>
>
>
> A small, not-quite-consolation: the Cordy feeding behavior was interesting
> today. Previously, they had been flycatching in a Peachleaf Willow and
> downstream from the bridge, out of view. Today, they did much more
> flycatching nearer the bridge, where the fledgling cowbird was.
> Specifically, I saw several efforts to nab insects from the ground.
>
>
>
> Here’s the timeline of our observations, keeping in mind we didn’t make
> daily visits, nor were our visits always at the same time of day. And some
> were relatively brief (20-30 minutes).
>
>
>
> 5/24 – Male present
>
> 6/6 – Female arrives
>
> 6/7 – Female carrying nesting material
>
> 6/23 (or so) – Male singing slows
>
> 6/27 – Female carrying food – one run observed; not apparent if female ate
> or fed food.
>
> 6/28 – Female leaving nest more frequently on food runs
>
> 7/7 – Cowbird fledgling near bridge, fed by Cordy pair (definitely by
> female, possibly by male).
>
>
>
> Not the outcome I was hoping for, but so it goes.
>
>
>
> - Jared Del Rosso
>
> Centennial, CO
>
> --
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> .
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>

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[cobirds] Nesting Cordies, But... - Cenntennial (Arapahoe)

[Jared Del Rosso]

 

For the better part of a month, Cynthia Madsen, Mary O’Connor, and I have 
been dutifully watching a Cordilleran Flycatcher pair apparently nesting 
along the Little Dry Creek in Centennial, CO (Arapahoe, approx. 5475’). Our 
visits weren’t daily, but they were nearly so, and we’ve been rewarded with 
the opportunity to observe the pair’s behavior as the apparent nest went 
along.

 

I say apparent because we never found the nest, which we think / thought 
was under a bridge over the creek. We inferred from changes in behavior – 
the male ceasing to sing regularly, the female remaining out of sight most 
of the time, the female reappearing to make food runs, those food runs 
increasing in frequency – that nesting was occurring. The timeline of these 
shifts in behavior roughly corresponded to the timeline we calculated based 
on Atlas data about Cordy nesting. 

 

There was definitely a nest, we now know. Today, when I arrived at the 
nesting location, I was thrilled to hear some apparent begging calls from 
near the bridge. The pair continually visited the location with food. And 
then, from some movement near the apparent parents, a fledgling emerged: 
cowbird.

 

We’d worried about cowbirds but hoped that the likely location of the nest 
– under the bridge – would protect against that. It’s possible that the 
nest, in fact, was near but not under the bridge – or that it was under a 
sort of “eave” around the bridge. Or it’s just possible that a female 
cowbird found the nest under the bridge.

 

A small, not-quite-consolation: the Cordy feeding behavior was interesting 
today. Previously, they had been flycatching in a Peachleaf Willow and 
downstream from the bridge, out of view. Today, they did much more 
flycatching nearer the bridge, where the fledgling cowbird was. 
Specifically, I saw several efforts to nab insects from the ground. 

 

Here’s the timeline of our observations, keeping in mind we didn’t make 
daily visits, nor were our visits always at the same time of day. And some 
were relatively brief (20-30 minutes).

 

5/24 – Male present

6/6 – Female arrives

6/7 – Female carrying nesting material

6/23 (or so) – Male singing slows

6/27 – Female carrying food – one run observed; not apparent if female ate 
or fed food.

6/28 – Female leaving nest more frequently on food runs

7/7 – Cowbird fledgling near bridge, fed by Cordy pair (definitely by 
female, possibly by male). 

 

Not the outcome I was hoping for, but so it goes.

 

- Jared Del Rosso

Centennial, CO

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[cobirds] Gallinule

['Steven Mlodinow' via Colorado Birds]

The Larimer C Gallinule made a brief appearance at 11:33 at its usual spot
Steven Mlodinow 
Longmont 

Sent from my iPhone

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[cobirds] Common Gallinule

[Carrie Olson]

Running Deer bird, technically at the CSU Environmental Learning Center, seen 
sporadically between at 7:05-7:18 in the usual spot.

Caroline Olson
Fort Collins

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[cobirds] Common Gallinule - Running Deer

[Steve Stachowiak]

Cobirders,

The bird was present at 7:15 this morning and very accommodating at the 
previously described location.

Good birding,
Steve Stachowiak
Highlands Ranch, CO

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[cobirds] Colorado Rare Bird Alert, 7 July 2018

[Joyce Takamine]

Date:July 7, 2018
Compiler:   Joyce Takamine
e-mail:  RBA AT cobirds.org

This is the Rare Bird Alert for Saturday, July 7 sponsored by Denver Field
Ornithologists and the Bird Conservancy of the Rockies.

Highlight species include: (* indicates new information on this species)

NOTE:  The RBA is now using the new AOU checklist and the order of families
has changed.
Snow Goose (Kiowa)
Trumpeter Swan (Archuleta)
Bufflehead (Boulder)
Hooded Merganser (Arapahoe)
Northern Bobwhite (Logan)
Yellow-billed Cuckoo (Logan, Otero)
Greater Roadrunner (Otero)
LESSER NIGHTHAWK (Montrose)
Black Swift (Clear Creek, Pueblo)
Chimney Swift (Jefferson)
Sora (Otero)
COMMON GALLINULE (Larimer)
American Coot (Phillips)
Black-necked Stilt (Kiowa)
Mountain Plover (Kiowa)
Upland Sandpiper (Logan)
Long-billed Curlew (Kiowa, Larimer)
Baird’s Sandpiper (El Paso)
Solitary Sandpiper (El Paso)
Least Sandpiper (Douglas)
Willet (Boulder, Kiowa)
Greater Yellowlegs (Boulder, Larimer)
Franklin’s Gulls (Kiowa)
Least Tern (Kiowa)
Caspian Tern (*Boulder)
Great Egret (Kiowa)
Snowy Egret (*Eagle)
Little Blue Heron (Boulder)
Cattle Egret (Jefferson, Pueblo)
Green Heron (Denver, Kiowa, Larimer, Logan)
White-faced Ibis (*Eagle, Summit)
Mississippi Kite (El Paso, Kiowa, Otero)
Northern Goshawk (Jefferson)
Swainson’s Hawk (Otero)
Lewis’s Woodpecker (Archuleta)
Red-headed Woodpecker (Logan, Otero)
Acorn Woodpecker (La Plata)
Red-bellied Woodpecker (Logan)
Ladder-backed Woodpecker (Otero)
Hairy Woodpecker (Logan)
American Three-toed Woodpecker (Clear Creek, Grand)
EASTERN WOOD-PEWEE (Logan)
Least Flycatcher (*Eagle)
Hammond’s Flycatcher (Weld)
Cordilleran Flycatcher (Arapahoe)
Black Phoebe (Teller)
Eastern Phoebe (Otero)
Ash-throated Flycatcher (El Paso)
Cassin’s Kingbird (Denver, La Plata, Otero)
Scissor-tailed Flycatcher (Weld)
Red-breasted Nuthatch (Arapahoe, Yuma)
Yellow-throated Vireo (Weld)
Warbling Vireo (Eastern) (Boulder)
Red-eyed Vireo (Larimer, Weld)
Canada Jay (Gray Jay) (Clear Creek, *Mesa)
Chihuanhuan Raven (Otero)
Purple Martin (*Mesa)
Bushtit (Adams, Gilpin)
Canyon Wren (Otero)
Pacific Wren (*Larimer)
Eastern Bluebird (Larimer, Otero)
Curve-billed Thrasher (El Paso)
American Pipit (Clear Creek)
Brown-capped Rosy-Finch (Clear Creek)
Red Crossbill (Clear Creek)
Lesser Goldfinch (Adams, Boulder)
Chestnut-collared Longspur (Weld)
McCown’s Longspur (Larimer)
Green-tailed Towhee (Arapahoe)
Rufous-crowned Sparrow (Otero)
Cassin’s Sparrow (Boulder)
Chipping Sparrow (Arapahoe)
Field Sparrow (Larimer, Weld)
Lark Sparrow (El Paso)
Lark Bunting (Boulder)
Grasshopper Sparrow (*Jefferson)
BAIRD’S SPARROW (Larimer)
White-throated Sparrow (Weld)
Yellow-breasted Chat (Kiowa)
Bobolink (Mesa)
Orchard Oriole (Logan, Otero)
Baltimore Oriole (Logan, *Prowers, Yuma)
American Redstart (Douglas, Kiowa)
Northern Parula (Pueblo)
Chestnut-sided Warbler (Boulder)
Black-throated Blue Warbler (Weld)
Grace’s Warbler (*Mesa)
Northern Cardinal (Logan)
Lazuli Bunting (Adams, Logan)
Indigo Bunting (Boulder, *Mesa, Otero)
Dickcissel (*Boulder, *Jefferson, Kiowa, Logan)

ADAMS COUNTY:
---On July 1 at Rocky Mountain Arsenal NWR, First Creek, John Beitsch
reported m  Lesser Goldfinch.
---On July 1 at Barr Lake SP, Tricia Van Laar reported f Lazuli Bunting by
feeders.
---On July 4 at Morrison Nature Center at Star K Ranch, G Stacks reported 5
Bushtit.

ARAPAHOE COUNTY:
---On July 1 on High Line Canal Trail – S University Blvd to E Orchard Rd,
Jared Del Rosso reported 2 Cordilleran Flycatchers.  On July 4 on High Line
Canal Trail –S University Blvd to E Orchard Rd, Cynthia Madsen reported 2
Cordilleran Flycatchers.
---On July 1 at Littleton Cemetery, David Suddjian reported 3 Chipping
Sparrows.  On July 5 at Littleton Cemetery, David Suddjian reported 2
Chipping Sparrows.
---On July 1 at Cherry Creek SP, Matt Means reported Green-tailed Towhee.
---On July 1 on Big Dry Creek Trail – S Colorado Blvd, to S University
Blvd, Mary O’Connor reported 2 Cordilleran Flycatchers.
---On July 2 at Writers Vista Park in Littleton, Santiago Tabares reported
Chipping Sparrow.
---On July 3 at Centennial Park, Crystal Wilson reported Hooded Merganser.
On July 4 at Centennial Park, Edward Donnan reported Hooded Merganser.

ARCHULETA COUNTY:
---On July 3 at Pinon Lake Reservoir, Justin  Bosler reported Trumpeter
Swan and 2 Lewis’s Woodpeckers.

BOULDER COUNTY:
---On July 2 at Walden Ponds/Cottonwood Marsh, Tanja Britton, Lucas Rot,
Ben Sanders, Tracy and Luke Pheneger reported imm Little Blue Heron.
---On June 16 at South Mesa Trail Parking Lot, Dan Zmolek and Leslie S
reported m Chestnut-sided Warbler, pair of Indigo  Bunting and 4 Lesser
Goldfinch.  On July 1 at South Mesa Trail, Luke and Tracy Pheneger reported
Chestnut-sided Warbler.  On July 2 at South Mesa Trail, David Chernack
reported Chestnut-sided Warbler.  On July 3 at South Mesa Trail Meg Reck
reported Chestnut-sided Warbler.  On July 4 at South Mesa Trail, Jon Webb
reported Chestnut-sided Warbler.
On July 2 at Lagerman