Agriculture
Seeds of the Future
Growing Healthier Tomato Plants
Keeping Bugs Away from Food
Amphibians
Frogs and Toads
Newts
Salamanders
Animals
Awake at Night
Vampire Bats on the Run
Eyes on the Depths
Behavior
Fighting fat with fat
Nice Chimps
Mice sense each other's fear
Birds
Woodpecker
Parakeets
Ospreys
Chemistry and Materials
Atomic Drive
Batteries built by Viruses
Nanomagnets Corral Oil
Computers
Games with a Purpose
Getting in Touch with Touch
The science of disappearing
Dinosaurs and Fossils
Did Dinosaurs Do Handstands?
Message in a dinosaur's teeth
An Ancient Feathered Biplane
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Results of GSAT are in schools this week
Earth
Greener Diet
Detecting an Eerie Sea Glow
Explorer of the Extreme Deep
Environment
Plant Gas
Lessons from a Lonely Tortoise
Inspired by Nature
Finding the Past
Ancient Cave Behavior
Of Lice and Old Clothes
The Taming of the Cat
Fish
Electric Ray
Eels
Sting Ray
Food and Nutrition
Yummy bugs
How Super Are Superfruits?
Building a Food Pyramid
GSAT English Rules
Who vs. Whom
Finding Subjects and Verbs
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
How are students placed after passing the GSAT exam
GSAT stars reap scholarship glory
Mastering The GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
Access denied - Disabled boy aces GSAT
GSAT stars reap scholarship glory
GSAT Mathematics
How to Slice a Cake Fairly
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Smiles Turn Away Colds
Foul Play?
Opening a Channel for Tasting Salt
Invertebrates
Oysters
Daddy Long Legs
Tapeworms
Mammals
Felines
Lynxes
Kodiak Bear
Parents
Raise a Lifelong Reader by Reading Aloud
How children learn
Children and Media
Physics
Dreams of Floating in Space
Project Music
Strange Universe: The Stuff of Darkness
Plants
Fastest Plant on Earth
Flower family knows its roots
Assembling the Tree of Life
Reptiles
Iguanas
Copperhead Snakes
Pythons
Space and Astronomy
Rover Makes Splash on Mars
Ringing Saturn
A Great Ball of Fire
Technology and Engineering
Crime Lab
Drawing Energy out of Wastewater
Musclebots Take Some Steps
The Parts of Speech
Adjectives and Adverbs
Pronouns
What is a Noun
Transportation
Seen on the Science Fair Scene
Middle school science adventures
Revving Up Green Machines
Weather
A Dire Shortage of Water
A Change in Climate
Warmest Year on Record
Add your Article

Revenge of the Cowbirds

Cowbirds are famous for their wily ways. These North American birds sneak into the nests of other birds, lay their eggs, and quickly escape before the owners return. They don't do any of the hard work it takes to raise chicks. Instead, they leave the parenting to the nest's owners. Given cowbirds' reputation, that's not totally surprising. But here's what might come as a shock. Even though the birds that live in these nests don't belong to the cowbird species, most of them adopt the big, hungry cowbird chicks and raise them as their own. Scientists have long wondered why the new parents raise the greedy chicks. New evidence now suggests that sometimes the birds have little choice. If they kick the moocher chicks out of the nest, the cowbird parents seek revenge. For a decade, researchers from the Illinois Natural History Survey in Champaign and the Florida Museum of Natural History in Gainesville have been monitoring warbler nests in boxes in southern Illinois. During that time, they often saw cowbird eggs in the warbler nests. The nest boxes sit on poles that the scientists have covered with grease to protect the eggs and chicks from raccoons, snakes, and other predators. Then, in 2002, the scientists tried something new. They removed the cowbird eggs from the warbler nests. Suddenly, unknown attackers started to destroy warbler eggs. But the damage wasn't evenly spread among the nests. The scientists found that that warbler eggs were damaged in only 6 percent of nests that held cowbird eggs. A whopping 56 percent of the warbler eggs were destroyed in the nests from which the scientists had removed cowbird eggs. The scientists suspected that the cowbirds might be the culprits, but they needed to prove it. To do so, they removed cowbird eggs from the nests and then changed the entrance hole to keep the cowbirds from returning. When the suspected attackers couldn't get into the nests, the warbler eggs remained untouched. Cowbirds, researchers concluded, are like mafia members: If a warbler doesn't give them what they want and raise their chicks, the parent retaliates. It's a tough balance for the warblers. When their nests are invaded, cowbird chicks eat so much food that some warbler chicks starve. Still, the scientists say, more warbler chicks survived in this group of nests than in the group where researchers removed the cowbird eggs. Too many of those nests were attacked by vengeful cowbird parents. Sometimes, this study suggests, it's better to put up with a bully than to try to fight back.E. Sohn

Revenge of the Cowbirds
Revenge of the Cowbirds








Designed and Powered by HBJamaica.com™