[mou] Sherburne Refuge ID Puzzle (heron)

Pastor Al Schirmacher PastorAl@PrincetonFreeChurch.net
Thu, 28 Jul 2005 09:32:28 -0500


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Have an ID puzzle from this morning, let me share the series of =
observations:

1) Twice in the last couple of weeks have observed a medium sized heron =
in the distance on the Sherburne NWR Auto Tour, chunkier & Larger than a =
Green Heron, much smaller than a Great Blue - however, the observations =
were short in duration - concluded that it was probably an American =
Bittern.  These observations may or may not be pertinent to today's.

2) This morning noticed a similar sized heron flying slowly from right =
to left at distances of 400-800 yards, west of Big Bluestem pond.  =
Initial eyes only observation was larger than a Green Heron, dark & =
distant (there were other GHs flying throughout the Auto Tour for mental =
comparison).

3) Watched it fly through my 10x50 binoculars for about 1/3 of the =
horizon, only additional detail was that it was probably dark blue or =
bluish/dark gray (not light) in color.

4) Pulled the scope out of the back of my van, and watched it (from 20X =
to 60X) at a distance of 600-800 yards as it completed its flight into =
the tree line.  The dark blue seemed to be consistent across its body =
(top & bottom), its legs were yellowish and seemed to stick farther out =
than a Green Heron, the neck was curved in, and there were no obvious =
head markings or breast streaking (that could be perceived at this =
distance).

In the field, ruled out American Bittern due to coloration and lack of =
"long-headedness".  Have much experience with Black-crowned Night Herons =
at Horicon Marsh in WI, not a match for either adults (black cap & back) =
or juveniles (streaking or light grey/white on breast & abdomen).  Head =
markings did not match an adult YC Night Heron, although I suppose a =
juvenile is a possibility (did not note the streaking or scaliness) - I =
have no field experience with this bird to compare.  It appeared too =
small for a juvenile Green Heron, and leg color is wrong for an adult.  =
I hesitate (but would love) to call it an adult Little Blue, especially =
since leg color could be a consideration (do yellow and green look =
substantially different at 600-800 yards in a scope?) - do have some =
field experience with this bird, although not flying.  However, the time =
of year for a wandering LBH seems appropriate.

Thoughts?  Help!

Al Schirmacher
Princeton, MN
Mille Lacs & Sherburne Counties
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<DIV><FONT face=3DArial size=3D2>Have an ID puzzle from this morning, =
let me share=20
the series of observations:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>1) Twice in the last couple of weeks =
have observed=20
a medium sized heron in the distance on the Sherburne NWR Auto Tour, =
chunkier=20
&amp; Larger than a Green Heron, much smaller than a Great Blue&nbsp;- =
however,=20
the observations were&nbsp;short in duration -&nbsp;concluded that it =
was=20
probably an American Bittern.&nbsp; These observations may or may not be =

pertinent to today's.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>2) This morning noticed a similar sized =
heron=20
flying slowly from right to left at distances of 400-800 yards, west of =
Big=20
Bluestem pond.&nbsp; Initial eyes only observation was larger than a =
Green=20
Heron, dark &amp; distant (there were other GHs flying throughout the =
Auto Tour=20
for mental comparison).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>3) Watched it fly through my 10x50 =
binoculars for=20
about&nbsp;1/3 of&nbsp;the horizon, only additional detail was that it =
was=20
probably dark blue or bluish/dark gray (not light)&nbsp;in =
color.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>4) Pulled the scope out of the back of =
my van, and=20
watched it (from 20X to 60X) at a distance of 600-800 yards as it =
completed its=20
flight into the tree line.&nbsp; The dark blue seemed to be consistent =
across=20
its body (top &amp; bottom), its legs were yellowish and seemed to stick =
farther=20
out than a Green Heron, the neck was curved in, and there were no =
obvious head=20
markings or breast streaking (that could be perceived at this=20
distance).</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>In the field, ruled out American =
Bittern due to=20
coloration and lack of "long-headedness".&nbsp; Have much experience =
with=20
Black-crowned Night Herons at Horicon Marsh in WI, not a match for =
either adults=20
(black cap &amp; back) or juveniles (streaking or light grey/white on =
breast=20
&amp; abdomen).&nbsp; Head markings did not match an adult&nbsp;YC Night =
Heron,=20
although I suppose a juvenile is a possibility (did not note the =
streaking or=20
scaliness) - I have no field experience with this bird to compare.&nbsp; =
It=20
appeared too small for a juvenile Green Heron, and leg color is wrong =
for an=20
adult.&nbsp; I hesitate (but would love)&nbsp;to call it an adult Little =
Blue,=20
especially since leg color could be a consideration (do yellow and green =
look=20
substantially different at 600-800 yards in a scope?) - do have some =
field=20
experience with this bird, although not flying.&nbsp; However, the time =
of year=20
for a wandering LBH&nbsp;seems appropriate.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Thoughts?&nbsp; Help!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Al Schirmacher</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Princeton, MN</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Mille Lacs &amp; Sherburne=20
Counties</FONT></DIV></BODY></HTML>

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