Early spring and late fall is the time to be on the look out
for Golden Eagles, a very uncommon species in Manitoba. Of course, you always have to be
careful to distinguish immature Bald Eagles from Goldens (probably at least 99
out of every 100 brown-headed eagles you see in Manitoba will be immature Bald
Eagles) so I am sharing these four photos of a Golden Eagle (prob. 2nd cycle),
two perched from front and back and two in flight showing underparts and
upperparts. I photographed this bird on a Nature Conservancy of Canada property
south of Riding Mountain National Park in early October (thanx Sandra for the
nudge – better late than never, eh!)
Things to look for include in this series of images:
* golden nape patch of GOEA shows in all
plumages but can be hard to see on a soaring bird (always look for this
feature)
* small-headed appearance of GOEA, esp. in
flight (BAEA head and bill more elongated and “stick out” more from body)
* the tail pattern of GOEA is distinctive but
be aware of the difference between immature that show a very distinctive white
band and adults that show much less white in tail (subtle bands) and compare
the extent of white in the various plumages of immature Bald Eagle
* larger size of GOEA sometimes useful but
difficult to judge in field and , as always with raptors, be aware of size
difference between the sexes
* typically darker colouration of GOEA than
immature BAEA, although this can be tricky to judge under field conditions
Also worth noting:
* size
compared to Canada Geese in photo (they were passing by – eagle not chasing
them)
* regrowing
primaries on this bird that give the wing an odd shape
* for
ageing of this bird, look for the limited white in the underwing and the
partially translucent effect at the base of the primaries, along with a
relatively limited amount of white in the tail (e.g. note how when viewed from
underside no white visible but when fanned and viewed from above a white band
is clearly present, even though not quite as extensive nor as defined nor as
contrasting as a first year bird) and also more gold in the shoulder than a
first year bird
* the
sheer awesomeness of this creature!
All the best to all the best!
Hello Cristian Thankyou for your informative blog.I would draw your attention to a website from Kentucky.Bernheim Golden Eagle Begins Fall Migration from Bernheim Arboretum and Research Forest,if you're not aware of it.Gary Dillin,Roblin Manitoba
ReplyDelete