Philadelphia Vireo ( Viréo de Philadelphie ) |
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Vireo philadelphicus | |||||||||||
General NotesThe population of Philadelphia Vireo appears to be increasing, according to a recent analysis of Breeding Bird Survey records conducted by National Audubon Society scientists. It is possible that the North American population has increased by as much as 166% in the last 40 years. There is sufficient data about this species to have a very high level of statistical confidence in this magnitude of growth. |
Abundance: | Common | Earliest observed date: |
Typical arrival date: |
May 22 | |
Breeding Status: | Breeding | Latest observed date: |
Typical departure date: |
September 7 |
Documented Observations |
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May 22-24, June 11-13, 1993. Sixteen observed at Hilliardton Marsh during field work for a Master's thesis by David Locky. |
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July 14, 1998. One observed at Mountain Chutes Camp by Barry Kinch. |
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June 7, 2009. Two observed at Kap-Kig-Iwan Provincial Park by Serge Gendron and Michael Werner |
Banding Results |
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Year |
Gillies
|
Hilliardton
|
Mountain
|
Year
|
1992 | 6 | 6 | ||
1997 | 1 | 2 | 3 | |
1998 | 1 | 4 | 5 | |
1999 | 13 | 13 | ||
2000 | 2 | 18 | 1 | 21 |
2001 | 9 | 5 | 14 | |
2002 | 8 | 11 | 19 | |
2003 | 8 | 4 | 12 | |
2004 | 35 | 35 | ||
2005 | 3 | 3 | 6 | |
2006 | 1 | 22 | 6 | 29 |
2007 | 15 | 15 | ||
2008 | ||||
2009 |