7 replies to this topic
#1
Parus
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Parus
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Posted 13 June 2012 - 05:34 AM
youngsters all look alike to me
#2
fisherman1313
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Posted 13 June 2012 - 06:47 AM
Jevenile Bald Eagle.
New Year's Resolutions:
Get my lifelist to 300 (at the time of the original writing-293, currently-294)
Finally get Mountain Quail and Vesper Sparrow
Top my previous single year best (2011-253) I'm at 210 as of 6/11.
Latest Lifer(s):Cassin's Kingbird, Basalt Campgrounds, San Luis Reservoir SRA, Merced County, CA, 6/3/13; Harris's Sparrow, Oka Ponds, Campbell, CA, 1/1/13
Favorite Recent Bird(s):Pileated Woodpecker, North Grove Trail, Calaveras Big Trees State Park, Calaveras County, CA 6/8/13; Cassin's Kingbird (Lifer), Varied Thrush, Basalt Campgrounds, San Luis Reservoir SRA, Merced County, CA; Lesser Nighthawk, Santa Fe Grade Rd., Merced County, CA, 6/3/13; Yellow-breasted Chat, Knights Ferry Rec Area, Knights Ferry, CA; 5/20/13; Blue-winged Teal (Pair), Peregrine Falcon, Sanderling (3),Franklin's Gull (9), Modesto Wastewater Treatment Facility, Modesto, CA, 5/12/13; MacGillivray's Warber, Adair Rd., Modesto, CA, 5/5/13; Long-eared Owl, Mercy Hot Springs, Fresno County, CA
#3
BarnSwallow
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Posted 13 June 2012 - 11:12 AM
Agree. Nice Pic!!
#4
hawkhenries
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hawkhenries
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Posted 13 June 2012 - 11:53 AM
With the amount of white on the tail how old would you all suspect this bird is? 4-7 years avg before white head and tail show in an adult bird right?
I'd guess 3-5 yrs old....
I'd guess 3-5 yrs old....
#5
BarnSwallow
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Posted 13 June 2012 - 12:14 PM
The white head and tail appear at 5 years old.
#6
hawkhenries
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Posted 13 June 2012 - 01:07 PM
The white head and tail appear at 5 years old.
Hmmm~ Now I'm curious. My memory may be failing but old information used to say 4-7 years. Has this recently changed or is it, in my case, OMS??
OMS=Old Man Syndrome
#7
TheBillyPilgrim
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Frank
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Posted 13 June 2012 - 01:26 PM
Hmmm~ Now I'm curious. My memory may be failing but old information used to say 4-7 years. Has this recently changed or is it, in my case, OMS??
OMS=Old Man Syndrome
I think you are both technically right. Generally, Bald Eagles reach adult plumage in their 5th year, but it can occur as early as the 4th year or even as late as the 7th or 8th in unusual cases. This is an interesting article on their plumages, although their sample size is really small: http://elibrary.unm....p0001-p0010.pdf
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#8
psweet
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Posted 13 June 2012 - 02:34 PM
This looks like a 3rd year bird -- the amount of yellow on the bill pretty much rules out anything younger, and the tail and head pattern aren't right for anything older. They can show this head pattern by their second year, and the tail can show this much white fresh out of the nest.
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