[NatureNS] Fwd: Golden Eagle Identification

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From: James Churchill <jameslchurchill@gmail.com>
Date: Wed, 8 Oct 2014 13:53:57 -0300
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---------- Forwarded message ----------
From: Todd Watts <fishbird@xplornet.ca>
Date: Wed, Oct 8, 2014 at 1:44 PM
Subject: Golden Eagle Identification
To: NATURENB@listserv.unb.ca


This is a time of year when a lucky person might see a migrating Golden
Eagle. Since there are common misconceptions about their identification, I
will provide some tips. The following notes could help to avoid confusing
this rare visiter with its distant relative the Bald Eagle.


(1) Golden Eagle identification cannot be based on size. Overlaps in size
between Bald and Golden Eagles are significant(check field guides and you
will see that the size ranges of their body lengths and wingspans are
nearly identical). Because of this, size cannot be used to tell eagles
apart. The fact that females can be larger than males and northern birds
tend to be larger than southern birds makes IDing eagles by size even more
problematic.

(2)) Golden Eagles are more closely related to buteos than fish eagles such
as North America's Bald Eagle. Thus, wing shape of a Golden is likely to
appear more buteo like (look for bulging secondaries).

(3) Tail length on a Golden is proportionately longer and head size is
comparatively smaller than Bald Eagles.

(4) Immatures of both species can show significant white on the under-wing.
However, this is limited to inner primaries as well as the secondaries on
immature Goldens. Immature Balds can show white on the
under-wing coverts, flight feathers as well as the body. The amount and
location is variable depending on age as well as the individual (for both
species). Tail patterns on immature birds can appear similar, although
there are significant differences.

(5) Noting manner of flight can aid in identification of both eagles.

(6) Golden Eagles are late migrants. In Southeastern Canada and the eastern
states they are most likely to be seen in October, November and December.
Early spring sightings are also possible.


Todd Watts
Bocabec, NB


NatureNB guidelines  http://www3.nbnet.nb.ca/maryspt/nnbe.html
Foire aux questions de NatureNB  http://www3.nbnet.nb.ca/maryspt/nnbf.html



-- 
James Churchill
Kentville, Nova Scotia
jameslchurchill@gmail.com
(902) 681-2374

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<div dir=3D"ltr"><br><div class=3D"gmail_quote">---------- Forwarded messag=
e ----------<br>From: <b class=3D"gmail_sendername">Todd Watts</b> <span di=
r=3D"ltr">&lt;<a href=3D"mailto:fishbird@xplornet.ca">fishbird@xplornet.ca<=
/a>&gt;</span><br>Date: Wed, Oct 8, 2014 at 1:44 PM<br>Subject: Golden Eagl=
e Identification<br>To: <a href=3D"mailto:NATURENB@listserv.unb.ca">NATUREN=
B@listserv.unb.ca</a><br><br><br>This is a time of year when a lucky person=
 might see a migrating Golden Eagle. Since there are common misconceptions =
about their identification, I will provide some tips. The following notes c=
ould help to avoid confusing this rare visiter with its distant relative th=
e Bald Eagle.<br>
<br>
<br>
(1) Golden Eagle identification cannot be based on size. Overlaps in size b=
etween Bald and Golden Eagles are significant(check field guides and you wi=
ll see that the size ranges of their body lengths and wingspans are nearly =
identical). Because of this, size cannot be used to tell eagles apart. The =
fact that females can be larger than males and northern birds tend to be la=
rger than southern birds makes IDing eagles by size even more problematic.<=
br>
<br>
(2)) Golden Eagles are more closely related to buteos than fish eagles such=
 as North America&#39;s Bald Eagle. Thus, wing shape of a Golden is likely =
to appear more buteo like (look for bulging secondaries).<br>
<br>
(3) Tail length on a Golden is proportionately longer and head size is comp=
aratively smaller than Bald Eagles.<br>
<br>
(4) Immatures of both species can show significant white on the under-wing.=
 However, this is limited to inner primaries as well as the secondaries on =
immature Goldens. Immature Balds can show white on the=A0 =A0 =A0 =A0 =A0 =
=A0 =A0 under-wing coverts, flight feathers as well as the body. The amount=
 and location is variable depending on age as well as the individual (for b=
oth species). Tail patterns on immature birds can appear similar, although =
there are significant differences.<br>
<br>
(5) Noting manner of flight can aid in identification of both eagles.<br>
<br>
(6) Golden Eagles are late migrants. In Southeastern Canada and the eastern=
 states they are most likely to be seen in October, November and December. =
Early spring sightings are also possible.<br>
<br>
<br>
Todd Watts<br>
Bocabec, NB<br>
<br>
<br>
NatureNB guidelines=A0 <a href=3D"http://www3.nbnet.nb.ca/maryspt/nnbe.html=
" target=3D"_blank">http://www3.nbnet.nb.ca/maryspt/nnbe.html</a><br>
Foire aux questions de NatureNB=A0 <a href=3D"http://www3.nbnet.nb.ca/marys=
pt/nnbf.html" target=3D"_blank">http://www3.nbnet.nb.ca/maryspt/nnbf.html</=
a><br>
</div><br><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr">James Ch=
urchill<br>Kentville, Nova Scotia<br><a href=3D"mailto:jameslchurchill@gmai=
l.com" target=3D"_blank">jameslchurchill@gmail.com</a><br>(902) 681-2374<br=
><br><br><br></div>
</div>

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