Environment

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FILE - In this 2014, file photo, provided by Rolf Peterson, at least two of three wolf pups, center, who survived the winter are documented on Isle Royale in northern Michigan by long-time researchers who track the wolves every winter by airplane. While the new pups brought the island's struggling wolf population to 11, researchers said Feb. 25, 2014, that one of the few remaining gray wolfs from the island was found dead earlier this month in northeastern Minnesota after escaping to the mainland across a Lake Superior ice bridge. On Wednesday, April 9, 2014, Isle Royale Superintendent Phyllis Green announced that authorities have rejected for now a proposal to introduce new wolves to the federally protected wilderness as a way to revive the wolf population. (AP Photo/Courtesy Rolf Peterson, File)

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This undated image provided by the U.S. Geological Survey shows a pinyon jay. The U.S. Geological Survey and researchers from the University of New Mexico and Northern Arizona University released a report this week that takes a closer look at some of the effects climate change is likely to have on species such as the desert tortoise and the pinyon jay. According to the report the jay stands to lose nearly one-third of its breeding range. (AP Photo/U.S. Geological Survey)

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This undated image provided by the U.S. Geological Survey shows a male desert tortoise near Palm Springs, Calif. The U.S. Geological Survey released a report this week that takes a closer look at some of the effects climate change is likely to have on species such as the desert tortoise and the pinyon jay. (AP Photo/U.S. Geological Survey)

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FILE - In this Dec. 17, 2011 file photo, scallop meat is shucked at sea on opening day of the scallop season off the coast of Harpswell, Maine. Preliminary data indicates Maine's 2013-14 scallop season was the strongest in the state in more than a decade, despite a harsh winter and new regulations that were unpopular with some fishermen. (AP Photo/Robert F. Bukaty, File)

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In this photo taken on Tuesday, April 8, 2014, Vermont Institute of Natural Science wildlife services manager Sara Eisenhauer, right, and intern Maddy Jacobs release a rehabilitated young bald eagle along the Connecticut River in North Thetford, Vt. The bald eagle was released almost three weeks after a Vermont game warden found the bird after it had apparently been hit by a car in Danby. (AP Photo/Valley News, Jennifer Hauck)

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In this photo taken on Tuesday, April 8,2014, Sara Eisenhauer, wildlife services manager at Vermont Institute of Natural Science, addresses a small crowd of people while holding a young bald eagle that she was about to release in North Thetford, Vt. Intern Maddy Jacobs holds the bird's head. The bald eagle was released almost three weeks after a Vermont game warden found the bird after it had apparently been hit by a car in Danby. (AP Photo/Valley News, Jennifer Hauck)

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Iowa Gov. Terry Branstad speaks during the Iowa Solar and Small Wind Energy Trade Association Day, Wednesday, April 9, 2014, at the Statehouse in Des Moines, Iowa. Branstad, who fired Iowa Department of Administrative Services director Mike Carroll on Tuesday, says he's confident his interim director will protect records and will thoroughly review the staff to ensure the agency functions properly. (AP Photo/Charlie Neibergall)

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Iowa Gov. Terry Branstad speaks during the Iowa Solar and Small Wind Energy Trade Association Day, Wednesday, April 9, 2014, at the Statehouse in Des Moines, Iowa. Branstad, who fired Iowa Department of Administrative Services director Mike Carroll on Tuesday, says he's confident his interim director will protect records and will thoroughly review the staff to ensure the agency functions properly. (AP Photo/Charlie Neibergall)

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In this Tuesday, April 8, 2014, David Borneman lights a controlled burn at the Davis-Foster Land Preserve in Meridian Township, Mich. The burn is expected to help improve habitat for the Henslow's sparrow. The Lansing State Journal reports the bird and many other types of wildlife use prairie habitat at the Davis-Foster Land Preserve. The sparrow is listed as endangered in Michigan. (AP Photo/The State Journal, Rod Sanford) NO SALES

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In this Tuesday, April 8, 2014, David Borneman, center, and his fire crew light a controlled burn at the Davis-Foster Land Preserve in Meridian Township, Mich. The burn is expected to help improve habitat for the Henslow's sparrow. The Lansing State Journal reports the bird and many other types of wildlife use prairie habitat at the Davis-Foster Land Preserve. The sparrow is listed as endangered in Michigan. (AP Photo/The State Journal, Rod Sanford) NO SALES

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In this Tuesday, April 8, 2014 photo, fire crew member Scott Klotz runs out of danger as flames rise during a controlled burn in Meridian Township, Mich. The burn is expected to help improve habitat for the Henslow's sparrow. The Lansing State Journal reports the bird and many other types of wildlife use prairie habitat at the Davis-Foster Land Preserve. The sparrow is listed as endangered in Michigan. (AP Photo/The State Journal, Rod Sanford) NO SALES