Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a nesting Arctic tern at Alexandra Fiord, Ellesmere Island
Photograph of a researcher examining weathered crude oil at Alexandria Bay, New York
Photograph of a Snow goose at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nest at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of a Snow goose nesting at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern looking at an egg at a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern looking at an egg at a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern looking at an egg at a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern looking at an egg at a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern looking at an egg at a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern looking at two eggs at a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern standing near a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern standing near a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern standing near a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern standing near a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an Arctic tern standing near a nest site at Alexandra Fiord, Ellesmere Island
Photograph of an herbicide-spraying helicopter at Brier Island, Nova Scotia
Photograph of an herbicide-spraying helicopter at Brier Island, Nova Scotia
Photograph of an oil pollution control tanker truck at Alexandria Bay, New York
Photograph of an oiled blue-winged teal at Alexandria Bay, New York
Photograph of an oiled boat at Alexandria Bay, New York
Photograph of an oiled embayment at Alexandria Bay, New York