Images

A Palm Warbler during migration at Knowles Marsh on the Patuxent Research Refuge in Laurel, MD

Male and female mallard ducks swimming along at Blackwater National Wildlife Refuge near Cambridge, MD.  

Red Knots, a migratory shorebird, flying over a salt marsh in coastal Worcester County, Maryland

USGS scientist Vicki Blazer obtaining a blood sample and performing fish necropsy for fish health assessments

American kestrel used to assess anticoagulant hazard to non-target raptors. Development of a Physiologically-Based Pharmacokinetic Model for Rodenticides Modifications; Toxicity of biologically incorporated chlorophacinone; Sequential Exposures to First and Second Generation Rodenticides by Non-target Raptors 

A Lincoln's Sparrow wintering at the Patuxent Research Refuge with the Eastern Ecological Science Center.

 

Pine Warbler foraging on a cold spring day foraging on the ground.  Photo courtesy of Mikey Lutmerding, Wildlife Biologist.  Photo taken at Point Lookout State Park, Scotland, MD

Pine Warbler foraging on a cold spring day foraging on the ground.  Photo courtesy of Mikey Lutmerding, Wildlife Biologist.  Photo taken at Point Lookout State Park, Scotland, MD.

U.S. Fish & Wildlife Service biologist holding a Northern Snakehead (Channa argus) captured in Maryland.

A juvenile Prairie Warbler at a stopover site along the Chesapeake Bay.  Photo courtesy of Michael Lutmerding of the EESC

USGS Scientists John Young (L), Jennifer Rapp (Center), and Kelly Maloney (R) take a break from collecting river bottom elevations on the Delaware River with GPS and boat-based sonar for a study investigating bathymetric lidar mapping capabilities.  

Experiment to determine if Eastern fence lizards can carry the Lyme disease spirochete

Assessing exposure to environmental contaminants in Chesapeake Bay ospreys.  Contaminant exposure, food chain transfer and potential health effects on fish and ospreys (Pandion haliaetus) in Chesapeake and Delaware Bays

Studies of environmental contaminant exposure in the osprey and their food web in Chesapeake Bay

Eastern screech owl used to study to assessment anticoagulant rodenticide hazards to non-target wildlife

Researchers counting and measuring stream fishes sampled as part of a multi-year study of the effects of streamflow variation on fish population dynamics.  This work was a component of the USGS WaterSMART, Apalachicola-Chattahoochee-Flint focal area study. Shown right to left: Rachel Katz (Univ. of GA), Paula Marcinek (GA DNR), and Mary Freeman (USGS).

An example of a disappearing marsh in the Eastern Shore of Maryland part of the  Mid-Atlantic USA.

Headwater stream

Blue Ridge Sculpin from Wikimedia Commons

A cerulean warbler (Setophaga cerulea) perched on a single branch in Frank Brenneman Road, Garrett County, Maryland

Depiction of aerial survey design protocol showing strip-transect width and marked wing on aircraft.

Author: Allison Sussman, adapted from *Certain and Bretagnolle 2008