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Vermont Breeding Bird Atlas


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Merlin (Falco columbarius)

Summary

  • Status in VT: Increased by 1,200% (0 to 12 blocks). Greatest increases in Champlain Valley.
  • Data from other research: No additional data for VT.
  • Conservation status: State rank S2B
  • Other atlases: NY: 1,400%; ON: 100%
  • VT’s role in North American range: VT is at the southern edge of the range.
  • Causes of change since first Atlas: Discontinuation of DDT use, which interfered with reproduction; ability to nest in urban to remote habitats that provide a sufficient prey base and large trees for nesting.
  • Management/Monitoring recommendations:  No specific recommendations.

Glossary of Terms and Abbreviations

Population Trends

Breeding Bird Survey Trends:(Northeast) (North America)

First Vermont Breeding Bird Atlas (1976-1981)

No Account Available

Second Vermont Breeding Bird Atlas (2003 - 2007)

How to Read the Maps

2003 - 2007
 
Merlin map
Category Priority Block Count
First First & Second
Confirmed
Probable
Possible 10  14 
Observed
Total 12  24 

Biophysical Region % of region species occupies % of all records for this species found in region
Champlain Valley 18 50
Northeastern Highlands 0 0
Northern Green Mountains 5 17
Northern Vermont Piedmont 6 17
Southern Green Mountains 0 0
Southern Vermont Piedmont 9 17
Taconic Mountains 0 0
Vermont Valley 0 0


Change in Distribution
Interactive map, instructions below

Biophysical Region First
Atlas
Second
Atlas
Change % Change
Champlain Valley 0 6 + 6   + 600  
Northeastern Highlands 0 0 + 0   + 0  
Northern Green Mountains 0 2 + 2   + 200  
Northern Vermont Piedmont 0 2 + 2   + 200  
Southern Green Mountains 0 0 + 0   + 0  
Southern Vermont Piedmont 0 2 + 2   + 200  
Taconic Mountains 0 0 + 0   + 0  
Vermont Valley 0 0 + 0   + 0  
Totals 0 12 + 12   +1200  


Links

Vermont eBird - Merlin

Encyclopedia of Life

All About Birds

 

 

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