Science News Archive - April 05, 2009
Nearly thirty gray wolves living on an island chain in northwestern Lake Superior have backbone malformations as a result of genetic inbreeding, presenting yet another hurdle for the wolvesâ€™ long-term survival, wildlife experts say.
Wildlife officials in Florida say they have been unable to drive swamphens, an invasive exotic bird, from the state. The South Florida Sun-Sentinel reported Sunday state officials went after the purple swamphens in 2006. Game wardens were ordered to shoot the slow-flying birds.
Demand has risen for couples to donate excess embryos to science since the U.S. government lifted restrictions on embryonic stem cell research, researchers say. The (Nashville) Tennessean reported Sunday that about 500,000 embryos are stored in U.S.
- The call or cry of a bird or other animal to its mate or its young.