Agriculture
Vitamin D-licious Mushrooms
Cleaning Up Fish Farms
Watering the Air
Amphibians
Salamanders and Newts
Salamanders
Frogs and Toads
Animals
Moss Echoes of Hunting
New Monkey Business
Staying Away from Sick Lobsters
Behavior
Swine flu goes global
Chimpanzee Hunting Tools
Island of Hope
Birds
Cassowaries
Lovebirds
Backyard Birds
Chemistry and Materials
The newest superheavy in town
Big Machine Reveals Small Worlds
Earth from the inside out
Computers
A Classroom of the Mind
Nonstop Robot
Graphene's superstrength
Dinosaurs and Fossils
Have shell, will travel
Digging Dinos
Winged Insects May Go Way Back
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
Hints of Life in Ancient Lava
Rocking the House
Life trapped under a glacier
Environment
A Change in Climate
Shrinking Fish
Forests as a Tsunami Shield
Finding the Past
Decoding a Beverage Jar
A Big Discovery about Little People
The Taming of the Cat
Fish
Manta Rays
Lungfish
Parrotfish
Food and Nutrition
How Super Are Superfruits?
The Color of Health
Allergies: From Bee Stings to Peanuts
GSAT English Rules
Order of Adjectives
Problems with Prepositions
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
Results of GSAT are in schools this week
GSAT Practice Papers | GSAT Mathematics | Maths
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
Access denied - Disabled boy aces GSAT
Results of GSAT are in schools this week
GSAT Mathematics
Math of the World
A Sweet Advance in Candy Packing
Monkeys Count
Human Body
A Long Trek to Asia
Remembering Facts and Feelings
Gut Germs to the Rescue
Invertebrates
Tapeworms
Lice
Starfish
Mammals
Persian Cats
Giant Panda
Siamese Cats
Parents
How children learn
Choosing a Preschool: What to Consider
What Not to Say to Emerging Readers
Physics
Hold on to your stars, ladies and gentlemen
The Pressure of Scuba Diving
Echoes of a Stretched Egg
Plants
Making the most of a meal
Surprise Visitor
Getting the dirt on carbon
Reptiles
Box Turtles
Gila Monsters
Alligators
Space and Astronomy
Evidence of a Wet Mars
A Very Distant Planet Says "Cheese"
Asteroid Moons
Technology and Engineering
Riding Sunlight
Sugar Power for Cell Phones
Dancing with Robots
The Parts of Speech
Adjectives and Adverbs
Pronouns
Problems with Prepositions
Transportation
Ready, unplug, drive
Morphing a Wing to Save Fuel
Middle school science adventures
Weather
The Best Defense Is a Good Snow Fence
Either Martians or Mars has gas
Watering the Air
Add your Article

Jay Watch

When some birds store food for future meals, they pay close attention to who might be watching when they hide the food. In the presence of thieves, the birds go to extra trouble to save their hoards. Among western scrub jays, certain birds are ranked higher than others. High-ranked birds often steal food from birds of lower rank. Low-ranked birds never steal from their superiors, but they sometimes steal from others of the same rank. In a generous spirit, jays allow their mates to raid each other's hoards. In a recent set of tests, scientists gave some yummy waxworms to individual jays. They also provided two ice cube trays, filled with pellets, as hiding places. When a jay other than its mate was watching, a bird would hide more waxworms in the tray that was farther away from the watcher. Later, when revisiting the trays in private, any hider who'd been watched by a superior during the first episode shifted more treats to other hiding places than did a bird watched by a subordinate, a mate, or no other jay. Next, the researchers let a jay hide waxworms in a single tray while a jay of similar rank watched. In the second round, there was a different observer and a different tray for hiding food. When the hider came back to the scene and found one of the original observers watching, it remembered which tray it had used while that observer was watching. Then, it went about moving worms away from that tray to the other one. And the jay would be very sneaky while doing it. Keeping the food hidden in its beak, it would poke its beak into several possible hiding places. A spy couldn't easily tell into which spot the food was actually placed. Scientists were surprised to find evidence that birds could tell the difference between individuals and could remember what those individuals knew. The new findings are "just the last step in a long series of experiments showing that birds do all kinds of things," says Tom Smulders of the University of Newcastle in England. The term "birdbrain" may be a compliment after all!E. Sohn

Jay Watch
Jay Watch








Designed and Powered by HBJamaica.com™