Summary

  • Status in VT: Increased by 353% (17 to 77 blocks). Greatest increase in Southern Green Mountains.
  • Data from other research: No additional data for VT.
  • Conservation status: State rank S4B; S5N
  • Other atlases: NY: 125%; PA: 148%; ON: no sig. change.
  • VT’s role in North American range: VT is in the southeastern edge of the breeding range.
  • Causes of change since first Atlas: Increase in forestland and availability of nest sites near water (?).
  • Management/Monitoring recommendations:No current recommendations.

Population Trends

Common Merganser graph

First Vermont Breeding Bird Atlas (1976-1981)

Species Account

Second Vermont Breeding Bird Atlas (2003 – 2007)

Common Merganser Map 1 Common Merganser Table 1 Common Merganser Table 2

Change in Distribution

mapkey Common Merganser Map 2 Common Merganser Table 3

Links

Vermont eBird

Encyclopedia of Life

All About Birds