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

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

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

[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