Date: 12/9/25 9:12 am From: David Hyde <davidhyde1951...> Subject: Re: [cobirds] Dead and Dying Geese in Thorton CO
On Lake McIntosh in Longmont about a week ago before the recent snow, I
approached an isolated Cackling goose by the shore. It moved slowly into
the water and moved away and as it moved its head jerked briefly forward
every few seconds. Having just looked it up I see these are symptoms of
avian flu. I've seen no dead geese on this lake. I wonder if the isolation
of a bird is done by the flock or the bird, realising it is sick, moves
away?
On Tue, Dec 9, 2025 at 3:47 AM Scott Rashid <pygmyowl15...> wrote:
> There has been at least 7 dead Canada’s at lake estes in the past few
> weeks.
>
> Scott Rashid
> Estes Park
>
>
> On Mon, Dec 8, 2025 at 7:06 PM Rachel Hopper <hopkohome8...> wrote:
>
>> I’ll just say that I have had 3 dead birds & 2 more showing signs of
>> illness in my backyard since I live on Long Pond. One actually died in my
>> yard & not in the water. I contacted CPW & they were not in the least
>> interested. Advised me to double bag the dead birds & throw them away.
>>
>> I have been collecting dead birds with mask & gloves & disposing of them
>> (double bagged) in the Long Pond trash dumpster.
>>
>> I realize there’s a small risk to me but I think better than letting the
>> resident Bald Eagles, Great Horned Owls & mammals in the area eat them &
>> then get sick.
>>
>> I am NOT advising anyone else to follow my lead.
>>
>> R.
>> -----------------------
>> Rachel Kolokoff Hopper
>> Follow me on iNaturalist <https://www.inaturalist.org/people/2339591> >> rkhphotography.net <https://www.rkhphotography.net/> >> <hopko...>
>> Ft. Collins, CO
>>
>> On Dec 8, 2025, at 3:25 PM, Courtney R <dr.cawtney...> wrote:
>>
>>
>> Contact the CPW for your area if you find *three or more dead wild birds
>> in a specific area within a two week period OR if you see live birds
>> showing clinical signs.*
>>
>> CPW will advise what to do once they’re contacted. While the spread is
>> not common to humans, precautions must be taken to prevent that. There is
>> risk to domestic birds, cats, dogs to consider as well.
>>
>> *Unless specifically directed by CPW, no specimens should be brought to
>> them*. They have a responsibility to interview any person that does
>> contact Birds that have died from avian flu to assess the risk of spread.
>>
>> I am not sure about DMNS, but we are dealing with a highly pathogenic
>> strain of avian flu, so human handling of carcasses should be extremely
>> limited and only carried on through professional instruction.
>>
>> In past years, CPW has provided a resource for Bird Conservancy Bald
>> Eagle Watch volunteers to collect information from observers. I will check
>> if that is still ongoing for this season and update the group.
>>
>>
>> [image: image0.png]
>>
>> https://ag.colorado.gov/animal-health/reportable-diseases/avian-influenza >>
>>
>>
>>
>> Thank you,
>> Courtney
>>
>> *Courtney Rella, PhD*
>> *<dr.cawtney...> <theyogicourtney...>*
>>
>> On Dec 8, 2025, at 15:00, linda hodges <hikerhodges...> wrote:
>>
>>
>> All,
>>
>> Am I mistaken or can we collect birds and take them to CPW for testing?
>> Or DMNS?
>>
>> Of course you’d need gloves and a large bag.
>>
>> I’m not aware of this occurring in El Paso County.
>> Linda
>>
>> *Linda Hodges*
>> *Colorado Springs*
>>
>>
>>
>>
>>
>> On Mon, Dec 8, 2025 at 2:43 PM woodcreeper29 via Colorado Birds <
>> <cobirds...> wrote:
>>
>>> All
>>> I had the same experience at Jumbo last week. Several dead and dying
>>> white geese there as well.
>>> Steve Larson
>>>
>>> Northglenn, CO
>>>
>>> On 12/08/2025 2:20 PM MST DAVID A LEATHERMAN <daleatherman...>
>>> wrote:
>>>
>>>
>>>
>>> John et al,
>>>
>>> Lots of dead “white” (Snow/Ross’s) geese apparent at John Martin
>>> Res/Lake Hasty two weeks ago. This area is historically hunted heavily but
>>> my sense was the number of birds lying/floating around was more than would
>>> be a typical incidence of hunter cripples. A few Canada/Cackling Geese are
>>> showing up at Sheldon Lake in Fort Collins City Park.
>>>
>>>
>>>
>>> Dave Leatherman
>>>
>>> Fort Collins
>>>
>>>
>>>
>>> *From:* <cobirds...> <cobirds...> *On Behalf
>>> Of *John Tumasonis
>>> *Sent:* Monday, December 8, 2025 2:00 PM
>>> *To:* Colorado Birds <cobirds...>
>>> *Subject:* [cobirds] Dead and Dying Geese in Thorton CO
>>>
>>>
>>>
>>> All:
>>>
>>> Several dead Canada and Cackling geese found at Hunter's Glen
>>> Reservoir and Eastlake in Thornton yesterday (12/7/25). I'm guessing these
>>> are cases of Avian Influenza coming back to haunt us. I haven't seen any
>>> recent state reports of the what the status of avian influenza are in the
>>> state, but there were articles about 8 months ago that it was still a
>>> danger (to birds) in Colorado.
>>>
>>>
>>>
>>> Is anyone else seeing die offs in other locations?
>>>
>>>
>>>
>>> John T (Tumasonis)
>>>
>>> "I'm not a real birder. I only pretend to be one on CoBirds."
>>>
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