Tag: "prey" at biology news
USGS And Arizona Game And Fish Begin Partnership To Study Western Yellow-Billed Cuckoo
...decreased availability of insects and other cuckoo prey
killedby insecticides. "Cuckoos aren't very visible to people to begin with," said Sogge. "They aresecretive and live in dense-growth habitats. It is easier to overlook thedecline of such wildlife." John D. Buffington, USGS chief biologist for the we...
USGS Scientists Find New Invasive Fish Species In Florida
...ghout the Southeast where it could compete with or prey
upon native fishes. Imagine a creature with all the attributes necessary to successfully invade and colonize the Everglades and other southeastern wetlands. Well, the swamp eel may be that creature." The lakes, streams, canals and swamps of Flori...
Pollution, Food Stress Take Toll On Bald Eagles
...tal of 1,100 hours ofvideotape. He counted prey
deliveries, the size and type of prey, adult and chickbehavior, and how long adults stayed at the nest -- a good measure of how easy itwas to find food. "Looking at contaminants was an obvious place to start thestudy," Gill says, "but we had to consi...
USGS Responds to Amphibian Declines With Program In Great Smokey Mountains National Park
...among the most important groups of animals both as prey
and as predators, and are therefore an important indicator of ecological health," said Dodd. Researchers have long maintained that certain traits of amphibians--such as their permeable skin, their ability to live on land and in the water, and their c...
Major Wolf Die-Off Recorded On Isle Royale
...ed then were old and weak--the kind wolves love to prey
on. Thoseanimals are no longer available, so wolves have had to rely on calves they couldkill, since healthy adult moose are quite able to defend themselves againstattack under most circumstances." Peterson said Isle Royale's moose herd is up...
Ant Pheromone May Aid Alzheimer's Patients
...nd its recruited nest mates find their way back to prey
they planto kill -- contains a chemical now underg...s for the ants: "This tiny antneeds help subduing prey
that can be 10 to 15 times its size, so the ant returnsto the nest and tries to recruit some nest ma...
Tiger Beetles Go Blind At High Speeds
..., N.Y. -- Reminder to tiger beetles: If you chase prey
at high speeds, you'll go blind. Entomologists hav...y're not getting enough photons reflected from the prey
to make an image and locate the prey. That is why they have to stop, look around and go. Although ...
Skull Of Refrigerator-Size Ancient Armadillo Finds A Home At UF
...mored shells, the armadillo skull probably was not prey
but just happened to tumble into the sinkhole cavity, ending up in the wolves' den, he said....
Purdue Researchers Track Oil Spill's Effects On Sea Otters
...r has on an entire ecosystem, including predators, prey
and the environment," Rebar says. Rebar, who was asked by the Justice Department to serve as an expert witness before the Exxon case was settled out of court, says there are legal lessons to be learned as well. "In circumstances where this type of en...
Cell-Membrane Proteins Appear To Play Key Role In Squid's Swiftness
...ive it fine controlof rapid swimming for capturing prey
and for escape, said Gillette, an affiliateof the U. of I. Beckman Institute for Advanced Science and Technology, whoworked with Gilly at the Hopkins Marine Station while on sabbatical. "Squids evolved from quite sluggish, heavily shelled mollusks...
Siblicide In Nature: Study Of Galapagos Seabird Finds Death Can Ensure Species Survival
...younger one out , leaving its tiny sibling prey
to certain death from heat or patrolling mockingbirds. The question for Anderson, who first began examining siblicide in 1984 among the boobies that nest on Isla Espanola , the Galapagos most southeastern island, was why. Why engage in a behav...
Human-Like Ability, Categorical Perception, Found In Insects
...s, emitting ultrasound that helps echolocate their prey
at 25 to 80 kHz (humans with good hearing can detect sounds up to 20 kHz). Steering toward the low-frequency cricket sound might help the flier find a mate, or at least the company of other crickets. However, failing to steer away from bats' ultras...
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