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ProjectsVermont Breeding Bird AtlasColonial Waterbirds-Strategies of Species Groups

Colonial Waterbirds-Strategies of Species Groups

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Suggested Citation:
Renfrew, R. 2013. Second Atlas of the Breeding Birds of Vermont, 2003-2007. Vermont Center for Ecostudies – Vermont Atlas of Life. Retrieved from http://val.vtecostudies.org. DATE ACCESSED. 

  • Limited and clumped distribution, restricted almost entirely to Lake Champlain
  • Status of species vary from rare and declining (e.g., Black-crowned Night-Heron) to locally abundant and increasing (e.g., Double-crested Cormorant)
  • Existing practices range from active reduction of cormorant and gull numbers to annually intensive efforts to stabilize Vermont’s management-dependent Common Terns.
  • Management is complex; decreases in some species may increase others and vice versa (e.g., one nearly-extirpated species, Black-crowned Night-Heron, is a known predator limiting the state-Endangered tern population).
  • Future management decisions must be guided by careful, coordinated, repeated population and habitat monitoring. A lake-wide plan would best accomplish this.
  • Species at the edge of their range (Cattle Egret, Caspian Tern) may not warrant targeted management.
  • Control the spread of invasive exotic species (Water Chestnut, Eurasian milfoil, Zebra mussels).
  • Protect nest islands from terrestrial exotics and human disturbance.
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