Friday, 2 August 2019

[cobirds] Colorado Rare Bird Alert for Saturday, August 3, 2019

Date:  Saturday, August 3, 2019

E-mail:  RBA AT cobirds.org

Compiler:  Burke Angstman, bangstman@yahoo.com

Phone:  303.984.4963


Observers have been helpful by reporting updates to COBirds. Thanks.


CAPITAL LETTERS denote very rare species, as listed by the Colorado Bird Records Committee at the CFO website.

(*) indicates new information on this species.

For more information on birds seen today, go to cobirds.org and scroll to the bottom for "Recent eBird Sightings".


Rare, out-of-place and out-of-season species include:


Field Sparrow (*Larimer)
Northern Waterthrush (Douglas)

White-winged Dove (Ouray)

Hepatic Tanager (Otero)

PAINTED BUNTING (Jefferson, Otero)


DOUGLAS COUNTY:
---On August 1 a Northern Waterthrush was reported by Bea Weaver near the intersection of N. Platte River Road and W. Pine Creek Road. (39.3584,-105.1696). Early migrant.

JEFFERSON COUNTY:

---On the morning of July 23 a cooperative male Painted Bunting was found by Claire H. at the Chatfield State Park Audubon Center feeders.  It continues to appear off and on thru July 31, making it perhaps the most-viewed individual of its species ever in Colorado.  If the feeders are down in early morning or in the evening, be sure to check for the bird in trees, shrubs and on the ground in vicinity of feeder poles. On July 28 one specific area where it occurred was the area west of the southernmost of the two buildings, including the bench where mixed seed that included millet, apparently its favorite, had been placed.  Thank you for updates posted to COBIRDS, including those about its feeding habits.

LARIMER COUNTY: On August 2 a Field Sparrow was reported by Denise Bretting at Devils Backbone Open Space.


OTERO COUNTY:

---On Juy 27 a male Painted Bunting was reported by Steve Mlodinow at Higbee Valley Road (Otereo CR 804)

---On the morning of July 27 a yellow (f or imm) Hepatic Tanager was photographed in a cone-laden juniper in Picketwire Canyon (37°39'18.5"N 103°34'04.2"W) south of LaJunta by Steve Mlodinow.  Also seen or heard in this area were Black-throated Sparrow, Summer Tanager and White-throated Swift. 


OURAY COUNTY:

---On July 27 an adult White-winged Dove was reported from Dennis Weaver Park (yes, THAT Dennis Weaver) in the town of Ouray by David and Susan Disher.


Upcoming DFO Field Trips...trip details on dfobirds.org


Walden Ponds Wildlife Habitat/Sawhill (Boulder County)

Friday, August 2

7:00 AM - 10:00 AM

Chuck Hundertmark (chundertmark8@gmail.com; 303-604-0531)


Caribou Ranch (Boulder County)

Saturday, August 3

6:00 AM - 1:00 PM

John Malenich  (john.malenich@comcast.net; 303-359-9456)


Lyons Area (Boulder and Larimer Counties)

Saturday, August 3

7:30 AM - 3:00 PM

Mark Amershek (mamershek@msn.com; 303-329-8646)


eBird Field Training (Carson Nature Center)

Sunday, August 4

6:30 AM - 10:30 AM

Gregg Goodrich (GreggGoodrich@gmail.com; 303-655-9135)


Mt. Evans Area (Jefferson and Clear Creek Counties)

Tuesday, August 6

6:00 AM - 4:00 PM

John Malenich  (john.malenich@comcast.net; 303-359-9456)

Bluff Lake Nature Center (Denver County)
Saturday, August 10

7:00 AM - 12:00 PM

Megan Miller  (Megan.k.miller2473@gmail.com; 720-775-9710)

Good birding! 

Burke Angstman

Lakewood

bangstman@yahoo.com

303.984.4963



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[cobirds] Science and hummingbird feeding

Can anyone help me? I am interested in finding scientific references on avian disease promoted by humans feeding hummingbirds. In particular, I'd like to see scientific opinions or, better yet, studies or evidence, on cane sugar nectar as a vector for disease causing agents in hummingbirds and best practice recommendations for cleaning polycarbonate plastic feeders.


I have seen quite a mix of dire, authoritative and unscientific opinions from internet experts who offer no supporting references. Facts would be better than opinions.


The best I've found is good but doesn't answer my questions:


Microbial communities in hummingbird feeders are distinct from floral nectar and influenced by bird visitation. 2019. Author(s): Lee, CasieTell, Lisa AHilfer, TiffanyVannette, Rachel L

At:

https://escholarship.org/uc/item/15r564v5

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[cobirds] Common nighthawks, Louisville

Hi Paula,

I had a similar experience yesterday (August 1) at about 6:20 p.m. in Longmont, Boulder County. A loose flock of Common Nighthawks (similarly, at least ten individuals) was swirling around over the intersection of 17th Ave and Hover St as I approached it on my way home from work. I quickly pulled over into the Safeway parking lot for a better look, but they were gone almost as soon as I had gotten out of the car, moving off toward the southwest. What a cool thing to see!

Sarah Spotten
Longmont, CO

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Thursday, 1 August 2019

[cobirds] Colorado Rare Bird Alert for Friday, August 2, 2019

Date:  Friday, August 2, 2019

E-mail:  RBA AT cobirds.org

Compiler:  Burke Angstman, bangstman@yahoo.com

Phone:  303.984.4963


Observers have been helpful by reporting updates to COBirds. Thanks.


CAPITAL LETTERS denote very rare species, as listed by the Colorado Bird Records Committee at the CFO website.

(*) indicates new information on this species.

For more information on birds seen today, go to cobirds.org and scroll to the bottom for "Recent eBird Sightings".


Rare, out-of-place and out-of-season species include:


Northern Waterthrush (*Douglas)

White-winged Dove (Ouray)

Hepatic Tanager (Otero)

PAINTED BUNTING (Jefferson, Otero)


DOUGLAS COUNTY:
---On August 1 a Northern Waterthrush was reported by Bea Weaver near the intersection of N. Platte River Road and W. Pine Creek Road. (39.3584,-105.1696). Early migrant.

JEFFERSON COUNTY:

---On the morning of July 23 a cooperative male Painted Bunting was found by Claire H. at the Chatfield State Park Audubon Center feeders.  It continues to appear off and on thru July 31, making it perhaps the most-viewed individual of its species ever in Colorado.  If the feeders are down in early morning or in the evening, be sure to check for the bird in trees, shrubs and on the ground in vicinity of feeder poles. On July 28 one specific area where it occurred was the area west of the southernmost of the two buildings, including the bench where mixed seed that included millet, apparently its favorite, had been placed.  Thank you for updates posted to COBIRDS, including those about its feeding habits.


OTERO COUNTY:

---On Juy 27 a male Painted Bunting was reported by Steve Mlodinow at Higbee Valley Road (Otereo CR 804)

---On the morning of July 27 a yellow (f or imm) Hepatic Tanager was photographed in a cone-laden juniper in Picketwire Canyon (37°39'18.5"N 103°34'04.2"W) south of LaJunta by Steve Mlodinow.  Also seen or heard in this area were Black-throated Sparrow, Summer Tanager and White-throated Swift. 


OURAY COUNTY:

---On July 27 an adult White-winged Dove was reported from Dennis Weaver Park (yes, THAT Dennis Weaver) in the town of Ouray by David and Susan Disher.


Upcoming DFO Field Trips...trip details on dfobirds.org


Walden Ponds Wildlife Habitat/Sawhill (Boulder County)

Friday, August 2

7:00 AM - 10:00 AM

Chuck Hundertmark (chundertmark8@gmail.com; 303-604-0531)


Caribou Ranch (Boulder County)

Saturday, August 3

6:00 AM - 1:00 PM

John Malenich  (john.malenich@comcast.net; 303-359-9456)


Lyons Area (Boulder and Larimer Counties)

Saturday, August 3

7:30 AM - 3:00 PM

Mark Amershek (mamershek@msn.com; 303-329-8646)


eBird Field Training (Carson Nature Center)

Sunday, August 4

6:30 AM - 10:30 AM

Gregg Goodrich (GreggGoodrich@gmail.com; 303-655-9135)


Mt. Evans Area (Jefferson and Clear Creek Counties)

Tuesday, August 6

6:00 AM - 4:00 PM

John Malenich  (john.malenich@comcast.net; 303-359-9456)

Bluff Lake Nature Center (Denver County)
Saturday, August 10

7:00 AM - 12:00 PM

Megan Miller  (Megan.k.miller2473@gmail.com; 720-775-9710)

Good birding! 

Burke Angstman

Lakewood

bangstman@yahoo.com

303.984.4963


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[cobirds] Chautauqua Indigo Bunting (Boulder)

The male is still singing this morning at the location Jane Baryames reported two days ago. We saw it just past the last house on the left on both sides of Bluebell Lane. It's territory includes some fairly distant bushes and trees in the meadow on the west side. This species sings late into the day and late into the summer. 

Bob Shade
Lakewood

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Re: [cobirds] Warbler ID, Larimer Cty.

Dave
Looks like a very juv YRWA.
Ira Sanders

On Thu, Aug 1, 2019, 11:17 AM Dave Hyde <pink-beam@hotmail.com> wrote:

Hi CObirders,

                With all your great replies yesterday re the House Finch/BH Grosbeak with 'Avian pox', I thought I'd post this photo here to see if we can identify this warbler which appeared this morning in the company of a Virginia's warbler. This is the only good photo I got of the bird and note that it had the two white undertail patches that most warblers have. Is this a Yellow-rumped? I looked through my Sibley and NG Guides and thought it might be a Blackpoll warbler. What is this bird? Any suggestions appreciated – Dave/nr Drake, Larimer Cty.

 

 

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[cobirds] Warbler ID, Larimer Cty.

Hi CObirders,

                With all your great replies yesterday re the House Finch/BH Grosbeak with 'Avian pox', I thought I'd post this photo here to see if we can identify this warbler which appeared this morning in the company of a Virginia's warbler. This is the only good photo I got of the bird and note that it had the two white undertail patches that most warblers have. Is this a Yellow-rumped? I looked through my Sibley and NG Guides and thought it might be a Blackpoll warbler. What is this bird? Any suggestions appreciated – Dave/nr Drake, Larimer Cty.

 

 

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