McGILL BIRD OBSERVATORY

PHOTO LIBRARY

Philadelphia Vireo (Vireo philadelphicus)

 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 - May:
ASY - U
Sexes identical. 
SY - U
Sexes identical.  		   

 

-

May - 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.		      

Comparison between fall Philadelphia (left) and Warbling (right) Vireos:

Ageing and sexing details:

after-second-year unknown

A


Photo by Barbara Frei, McGill Bird Observatory (QC), May 2008

A


Photo by Barbara Frei, McGill Bird Observatory (QC), May 2008

A


Photo by Barbara Frei, McGill Bird Observatory (QC), May 2008

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second-year unknown

S


Photo

S


Photo
 

U


Photo

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after-hatch-year unknown

A


Photo by Seabrooke Leckie, September 2006


Photo by Marcel Gahbauer, September 2008
 

T


Photo by Seabrooke Leckie, September 2006


Photo by Marcel Gahbauer, September 2008
 

T


Photo by Marcel Gahbauer, September 2008


Photo by Seabrooke Leckie, September 2006


Photo by Marcel Gahbauer, September 2005

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hatch-year unknown

H


Photo by Marie-Anne Hudson, McGill Bird Observatory, August 2007


Photo by Seabrooke Leckie, August 2006


  Photo by Marcel Gahbauer, McGill Bird Observatory (QC), May 2008

T


Photo by Marie-Anne Hudson, McGill Bird Observatory, August 2007


Photo by Marcel Gahbauer, McGill Bird Observatory (QC), August 2008


Photo by Marie-Anne Hudson, McGill Bird Observatory, August 2007
 

T


Photo by Marie-Anne Hudson, McGill Bird Observatory, August 2007


Photo by Marcel Gahbauer, McGill Bird Observatory (QC), May 2008

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© 2002- The Migration Research Foundation Inc.