Red Tailed Hawk

On Apr 8, 8:22?am, Brooklyn1 wrote:

==
Great live video...via highspeed Internet comes in perfect.

Our hawks aren't even back yet as far as I can tell. Our snow is going
but what a backward spring. Thanks for the link.
==
 
On Apr 8, 9:22?am, Brooklyn1 wrote:

My favorite: Especially because of all the information in the
moderated blog alongside. I've made a contribution every year I've
watched, just so the camera will keep going. There isn't any sound,
but that's mainly because it is located next to a busy airport.

http://www.wvec.com/marketplace/microsite-content/eagle-cam.html
(eaglets are getting bigger and bigger - two of them are now walking
on their feet (not on their ankle joints, like they do first). They
will probably fledge around Memorial Day.

Also, there is he Decorah fish hatchery one, that does have sound, but
no moderated blog:

http://www.ustream.tv/decoraheagles (hatchlings are really young,
still)


N.
 
On Apr 8, 11:28?pm, Roy wrote:

For many years we had one of these living in a large old paperbark
tree.

http://www.birdway.com.au/accipitridae/little_eagle/index.htm

The paperbark has bare branches right at the top, just right for an
eagle lookout. Every year the female returned and they raised their
young. Very noisy young at that, they spent all day squawking.

The a couple of years ago a younger interloper came in and challenged
the older bird. For two weeks they conducted aerial battles over our
property. Really something to see, two eagles falling out of the sky
with their talons locked.

Eventually it must have been too much for the older bird as he did not
return. The younger one never did move in either, he probably had a
home and territory adjoining.

We also had a pair of these visit from time to time.

http://www.birdway.com.au/accipitridae/wedge_tailed_eagle/index.htm

I do a bit of recreational flying (sailplanes) and have been
thermaling with groups of up to 10 Wedge-tails. It it better to be
discreet when they get cranky though, they are wont to drop their
undercarriage and attack the clear canopy of a sailplane

JB
 
On Apr 10, 8:24?pm, Golden One wrote:

==
Very interesting Southern Hemisphere raptors indeed.

A few years back we had an all white eagle or hawk in our
neighbourhood. It did not conform to any bird in my raptor book and
was around every year for about six years I believe. You could see it
for well over a three quarters of a mile. I presume that it was an
albino but will never know. Red-tailed hawks are most prevalent here
as a rule.
==
 
On Apr 11, 12:46?pm, Roy wrote:

The bird books I have list (or show pictures of) different colour
variants, and often they are white. Do not think they are albinos,
just rarer variants.

I wonder of raptors would have trouble with the pink eyes that albinos
have?

Did a quick search of images on the net, not one of the photos of
white hawks or eagles was actually an albino. They all has
appropriately coloured eyes (black or brown), just all white or
partially white feathers.

JB
 
On Sun, 10 Apr 2011 22:14:27 -0700 (PDT), Golden One
wrote:


Many birds don't fully mature for several years, meanwhile they appear
very differently at different stages... and some have plummage that
changes with the seasons. Did you know that bird plummage contains no
pigment, what coloring we see is how their feathers refract light,
fish scales the same... it's a prismatic effect. I don't think there
is such thing as an albino bird, fish, reptile, or insect... only
mammals can be albino (absense of pigment). Butterfly wings contain
no pigment either, that 'powder' on their wings acts like microscopic
prisms.
http://www.msnbc.msn.com/id/37573292/ns/technology_and_science-science/
http://www.livescience.com/92-advanced-optics-butterfly-wings.html
http://news.nationalgeographic.com/...100624-butterfly-wing-colors-scales-pictures/
 
On Apr 11, 7:47?am, Brooklyn1 wrote:

Bald eagles for one - don't get their full white heads and tail
feathers until about 5 years old - they are a sign that they are ready
to mate.

N.
 
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