Re: [cobirds] big age difference in owl nestlings?

2020-05-14 Thread 'Peter Ruprecht' via Colorado Birds 
 To update on this unexpected observation - the apparent smaller nestling has 
not been seen for several days now.  The larger fledglings seem to be in nearby 
trees most of the time and the adults do not seem to be attending the nest any 
more.  

Thanks to everyone who offered feedback on the situation.  Sorry I don't have a 
happier ending to report.
 -Peter

On Saturday, May 9, 2020, 8:05:37 AM MDT, Scott  wrote:  
 
  
Yes,
 
I have seen GHO's lay one egg every three days, and I have see them weight up 
to and over a week or longer to lay a second or third egg.
 
It will be interesting to see what the parents do with the owlets when the 
oldest owlets begin branching. But GHO's are very good parents for the most 
part.
 
 Scott Rashid
 Estes Park 

 
 On 5/8/2020 3:46 PM, 'Peter Ruprecht' via Colorado Birds wrote:
  
 
 Hi Cobirders, 
  I've been watching a Great Horned Owl nest near my house in Superior.  The 
nestlings are getting pretty big and starting to move out of the nest and onto 
nearby branches.  However, a couple nights ago I thought I saw a small fluffy 
white head sticking up among the much bigger other nestlings.  And then today 
someone sent me a photo which I think pretty clearly shows a young GHOW 
nestling (totally downy, maybe 2 weeks old at most) in there. 
  Has anyone ever heard of such an age difference in GHOW nestlings?  This is 
clearly not just the usual asynchronous hatching.  I thought perhaps the small 
one could have been brought in as prey from another nest but it seemed to be 
sitting up and alive.  I didn't see anything like this in a quick google 
search. 
  Thanks, Peter Ruprecht Superior
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Re: [cobirds] big age difference in owl nestlings?

2020-05-09 Thread Scott 

Yes,

I have seen GHO's lay one egg every three days, and I have see them 
weight up to and over a week or longer to lay a second or third egg.


It will be interesting to see what the parents do with the owlets when 
the oldest owlets begin branching. But GHO's are very good parents for 
the most part.


Scott Rashid
Estes Park


On 5/8/2020 3:46 PM, 'Peter Ruprecht' via Colorado Birds wrote:

Hi Cobirders,

I've been watching a Great Horned Owl nest near my house in Superior.  
The nestlings are getting pretty big and starting to move out of the 
nest and onto nearby branches.  However, a couple nights ago I thought 
I saw a small fluffy white head sticking up among the much bigger 
other nestlings.  And then today someone sent me a photo which I think 
pretty clearly shows a young GHOW nestling (totally downy, maybe 2 
weeks old at most) in there.


Has anyone ever heard of such an age difference in GHOW nestlings?  
This is clearly not just the usual asynchronous hatching.  I thought 
perhaps the small one could have been brought in as prey from another 
nest but it seemed to be sitting up and alive.  I didn't see anything 
like this in a quick google search.


Thanks,
Peter Ruprecht
Superior
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Re: [cobirds] big age difference in owl nestlings?

2020-05-08 Thread Marjorie Joy 
I’ve not had experience with that happening for owls in the 10 years I have 
been monitoring raptor nests for CPW. However, I have seen something similar 
with kestrels in a nest box behind my house in Pueblo West. About 6 years ago, 
3 young kestrels fledged from the box, one every other day as usual, and 2 
weeks later a 4th one popped out to join the other 3. Since we can’t see into 
the box, there’s no way to know for sure that there was actually that much 
difference in age, but the late one looked much less mature than her siblings, 
with a few pinfeathers and a slightly shorter tail. 

Cheers,
Margie Joy
Pueblo West, CO

Sent from my iPhone

> On May 8, 2020, at 3:47 PM, 'Peter Ruprecht' via Colorado Birds 
>  wrote:
> 
> 
> Hi Cobirders,
> 
> I've been watching a Great Horned Owl nest near my house in Superior.  The 
> nestlings are getting pretty big and starting to move out of the nest and 
> onto nearby branches.  However, a couple nights ago I thought I saw a small 
> fluffy white head sticking up among the much bigger other nestlings.  And 
> then today someone sent me a photo which I think pretty clearly shows a young 
> GHOW nestling (totally downy, maybe 2 weeks old at most) in there.
> 
> Has anyone ever heard of such an age difference in GHOW nestlings?  This is 
> clearly not just the usual asynchronous hatching.  I thought perhaps the 
> small one could have been brought in as prey from another nest but it seemed 
> to be sitting up and alive.  I didn't see anything like this in a quick 
> google search.
> 
> Thanks,
> Peter Ruprecht
> Superior
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[cobirds] big age difference in owl nestlings?

2020-05-08 Thread 'Peter Ruprecht' via Colorado Birds 
Hi Cobirders,
I've been watching a Great Horned Owl nest near my house in Superior.  The 
nestlings are getting pretty big and starting to move out of the nest and onto 
nearby branches.  However, a couple nights ago I thought I saw a small fluffy 
white head sticking up among the much bigger other nestlings.  And then today 
someone sent me a photo which I think pretty clearly shows a young GHOW 
nestling (totally downy, maybe 2 weeks old at most) in there.
Has anyone ever heard of such an age difference in GHOW nestlings?  This is 
clearly not just the usual asynchronous hatching.  I thought perhaps the small 
one could have been brought in as prey from another nest but it seemed to be 
sitting up and alive.  I didn't see anything like this in a quick google search.
Thanks,Peter RuprechtSuperior

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