Agriculture
Vitamin D-licious Mushrooms
Watering the Air
Protecting Cows—and People—from a Deadly Disease
Amphibians
Poison Dart Frogs
Bullfrogs
Salamanders and Newts
Animals
Pothole Repair, Insect-style
Odor-Chasing Penguins
Walks on the Wild Side
Behavior
Pollution at the ends of the Earth
Baby Number Whizzes
A Light Delay
Birds
Flightless Birds
Seagulls
Cassowaries
Chemistry and Materials
Earth-Friendly Fabrics
Music of the Future
Sweeeet! The Skinny on Sugar Substitutes
Computers
It's a Small E-mail World After All
Two monkeys see a more colorful world
Middle school science adventures
Dinosaurs and Fossils
Dino Bite Leaves a Tooth
Dino Babies
Fossil Fly from Antarctica
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Less Mixing Can Affect Lake's Ecosystem
Life trapped under a glacier
Earth Rocks On
Environment
Whale Watch
Swimming with Sharks and Stingrays
Blooming Jellies
Finding the Past
Big Woman of the Distant Past
A Volcano's Deadly Ash
Salt and Early Civilization
Fish
Tilapia
Tuna
Cleaning Up Fish Farms
Food and Nutrition
Symbols from the Stone Age
A Taste for Cheese
The Essence of Celery
GSAT English Rules
Pronouns
Finding Subjects and Verbs
Who vs. Whom
GSAT Exam Preparation Jamaica
Ministry of Education Announces 82 GSAT Scholarships for 2010
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
10 Common Mistakes When Preparing for the GSAT Math Test
GSAT Exams Jamaica Scholarships
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Prime Time for Cicadas
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Surviving Olympic Heat
Don't Eat That Sandwich!
Disease Detectives
Invertebrates
Corals
Camel Spiders
Butterflies
Mammals
Mongooses
Narwhals
Koalas
Parents
Expert report highlights the importance to parents of reading to children!
Choosing a Preschool: What to Consider
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
The Pressure of Scuba Diving
Thinner Air, Less Splatter
Dreams of Floating in Space
Plants
Sweet, Sticky Science
Fungus Hunt
Nature's Alphabet
Reptiles
Iguanas
Sea Turtles
Turtles
Space and Astronomy
Gravity Tractor as Asteroid Mover
Mercury's magnetic twisters
A Puffy Planetary Puzzle
Technology and Engineering
Toy Challenge
A Micro-Dose of Your Own Medicine
Morphing a Wing to Save Fuel
The Parts of Speech
Problems with Prepositions
Pronouns
What is a Preposition?
Transportation
Morphing a Wing to Save Fuel
Flying the Hyper Skies
Middle school science adventures
Weather
Recipe for a Hurricane
Arctic Melt
Antarctica warms, which threatens penguins
Add your Article

Chicken Talk

Translate this: Cluck cluck. Tck tck. Squawk. Get it? If you were a chicken, you might. According to new research, chickens make meaningful sounds that refer to objects around them. A pecking chicken that goes "tck, tck, tck," for example, is saying, "Hey look, there's food!" (You can hear a chicken's food calls at http://www.sciencenews.org/20061118/foodcall.aif .) The discovery marks the first time that an animal other than people, monkeys, and other primates has been found to make sounds that, like words, represent something in the world around them. The existence of word-like clucks is not a total surprise to scientists. Previous studies had shown that male chickens make certain clucking noises when they find food. When female chickens (hens) hear these noises, they stomp over and either take some food from a male's beak or stare at the ground looking for morsels to eat. "They look like people who've lost their glasses," says Chris Evans of Macquarie University in Sydney, Australia. Other studies had also shown, for example, that chickens make alarm calls when scared by an intruder. The calls differ depending on whether the intruder walks or flies toward them. And other chickens react by looking either up in the air or around on the ground. This behavior did not necessarily prove that a cluck works like a word that refers to some object around the bird, Evans says. Instead, it was possible that the noise simply triggers a reflex in the birds to, for example, start pecking for supper. To investigate further, researchers conducted a number of food-based trials. In half of the tests, the scientists allowed hens to find three kernels of corn—not enough to fill the animals up, but enough to alert them that food was around. "The corn is like chocolate for them," Evans says. In the other half of the tests, the hens didn't get a treat. Next, the scientists played recordings of male food calls for the hens. In response, hens that already knew food was available looked at the ground for just 3 seconds. Food-deprived hens, on the other hand, searched for an average of 7.5 seconds after hearing the male calls. On the other hand, when the hens heard alarm calls, both fed and unfed birds reacted in the same way. These results suggest that the food-searching response is not a reflex, the researchers say. Instead, the birds seem to know what the food call means, and their reaction depends on what they already know about the area's food supply. Now try again: tck, tck, tck. Feeling hungry, yet?—E. Sohn

Chicken Talk
Chicken Talk








Designed and Powered by HBJamaica.com™