McGILL BIRD OBSERVATORY

PHOTO LIBRARY

Warbling Vireo (Vireo gilvus)

 Seasonal status at MBO:

JAN
       
FEB
       
MAR
       
APR
       
MAY
       
JUN
       
JUL
       
AUG
       
SEP
       
OCT
       
NOV
       
DEC
       
  common
  fairly common
  uncommon
  rare
  occasional
  no records
 
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Ageing and sexing guidelines:

January - July:
ASY - U
Sexes identical. 
SY - U
Sexes identical. 

-

June - December:
AHY - U
Similar to ASY-U (see above); roof of the mouth dark gray.
HY - U
Similar to SY-U (see above); roof of the mouth pale pinkish-gray, iris gray to brown.
JUV - U
Similar to HY-U, but with weak wing bars, and generally more brownish in appearance.
 

Ageing and sexing details:

after-second-year unknown

A


Photo by Marie-Anne Hudson, May 2007
 

A


Photo by Marie-Anne Hudson, May 2008


Photo by Barbara Frei, May 2007

A


Photo by Barbara Frei, May 2007


Photo by Marie-Anne Hudson, May 2007

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second-year unknown

S


Photo by Marie-Anne Hudson, May 2007


Photo by Marie-Anne Hudson, May 2008

S


Photo by Marie-Anne Hudson, May 2007
 

U


Photo by Marie-Anne Hudson, May 2007

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after-hatch-year unknown

Second photo SY


Photo by Marcel Gahbauer, August 2007


Photo by Marie-Anne Hudson, August 2007
 

T


Photo by Seabrooke Leckie, August 2006


Photo by Seabrooke Leckie, September 2006


Photo by Marcel Gahbauer, August 2007


Photo by Marie-Anne Hudson, August 2007
 

T


Photo by Marcel Gahbauer, August 2007


Photo by Seabrooke Leckie, September 2006


Photo by Marie-Anne Hudson, August 2007

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hatch-year unknown

H


Photo by Marie-Anne Hudson, August 2007


Photo by Marcel Gahbauer, August 2005
 

T


Photo by Marcel Gahbauer, August 2007


Photo by Marcel Gahbauer, August 2005


Photo by Marie-Anne Hudson, August 2007
 

T


Photo by Marcel Gahbauer, August 2007

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juvenile

H


Photo by Marie-Anne Hudson, July 2008


Photo by Marcel Gahbauer, August 2005
 

T


Photo by Marcel Gahbauer, August 2007


Photo by Marcel Gahbauer, August 2005


Photo by Marie-Anne Hudson, July 2008
 

T


Photo by Marie-Anne Hudson, July 2008

RETURN TO AGE/SEX OVERVIEW

 

© 2002- The Migration Research Foundation Inc.