Agriculture
Microbes at the Gas Pump
Flush-Free Fertilizer
Earth-Friendly Fabrics
Amphibians
Poison Dart Frogs
Salamanders and Newts
Salamanders
Animals
Awake at Night
Feeding School for Meerkats
A Fallout Feast for Crabs
Behavior
Newly named fish crawls and hops
Ear pain, weight gain
The Snappy Lingo of Instant Messages
Birds
Hawks
Swans
Vultures
Chemistry and Materials
Toxic Dirt + Avian Flu = Science Fair Success
Picture the Smell
A Framework for Growing Bone
Computers
Music of the Future
The Shape of the Internet
Electronic Paper Turns a Page
Dinosaurs and Fossils
Dino-Dining Dinosaurs
Dino-bite!
A Big, Weird Dino
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
Shrinking Glaciers
Recipe for a Hurricane
Hints of Life in Ancient Lava
Environment
Bald Eagles Forever
Giant snakes invading North America
A Change in Climate
Finding the Past
Sahara Cemetery
Ancient Art on the Rocks
The Taming of the Cat
Fish
Sting Ray
Sharks
White Tip Sharks
Food and Nutrition
Turning to Sweets, Fats to Calm the Brain
Chocolate Rules
The mercury in that tuna
GSAT English Rules
Order of Adjectives
Who vs. Whom
Whoever vs. Whomever
GSAT Exam Preparation Jamaica
March 21-22, 2013: Over 43,000 students will take the GSAT Exam
10 Common Mistakes When Preparing for the GSAT Math Test
Tarrant High overcoming the odds
GSAT Exams Jamaica Scholarships
GSAT Practice Papers | GSAT Mathematics | Maths
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
GSAT Mathematics
Losing with Heads or Tails
Math and our number sense: PassGSAT.com
Setting a Prime Number Record
Human Body
Music in the Brain
Heart Revival
Foul Play?
Invertebrates
Giant Squid
Octopuses
Mollusks
Mammals
German Shepherds
Hares
Siberian Husky
Parents
How children learn
The Surprising Meaning and Benefits of Nursery Rhymes
Choosing a Preschool: What to Consider
Physics
One ring around them all
Dreams of Floating in Space
Extra Strings for New Sounds
Plants
City Trees Beat Country Trees
Making the most of a meal
Fast-flying fungal spores
Reptiles
Sea Turtles
Alligators
Cobras
Space and Astronomy
Rover Makes Splash on Mars
A Smashing Display
An Icy Blob of Fluff
Technology and Engineering
Machine Copy
A Light Delay
Slip Sliming Away
The Parts of Speech
Problems with Prepositions
Countable and Uncountable Nouns
What is a Noun
Transportation
Morphing a Wing to Save Fuel
Reach for the Sky
How to Fly Like a Bat
Weather
Warmest Year on Record
Arctic Melt
In Antarctica watch the heat (and your step)
Add your Article

Polly Shouldn't Get a Cracker

It's a boy! That's the sort of news that biologists working to save endangered kakapo parrots in New Zealand probably aren't happy to hear all the time. The population of kakapo parrots currently numbers about 86 birds. Scientists have been trying to find ways to increase the number of these hefty, green, flightless creatures. About 5 years ago, conservationists noticed that females that they were feeding had far fewer female than male offspring. Fewer females mean fewer eggs in the future. But with such a small population to start with, the parrots need all the egg-laying females they can get. To even out the number of male and female chicks, researchers found that they had to put some of the mama parrots on a diet. In the wild, kakapos rummage around for plants from which they suck juices. Some years, they get extra helpings of tiny orange fruits from New Zealand's rimu trees. In those fruit-filled years, the kakapos lay more eggs than they do in years when food is scarce. Kakapos in captivity used to get extra treats as well. Their keepers fattened them up so the birds would produce babies with a better chance of survival. However, although the chicks were healthier, most of them were male. Biologists suspected that the problem was related to the way kakapos find a mate. It isn't easy for a male kakapo to attract a female. In the summer, male parrots carefully clear dirt patches and call out to potential partners for hours at night. Female parrots flock to the most impressive males. The other males are left completely out of the game. According to evolutionary theory, well-fed mother parrots would have more sons because healthy males would have a better chance of catching the attention of female parrots. In contrast, scrawny sons would have a harder time attracting females, so under-fed mother parrots would have more daughters. To test the idea, people breeding kakapos cut the chubbiest females' menu. When the dieting parrots had chicks, 9 were male and 10 were female. Among the females that were already lean, the birds produced 7 male eggs and 9 female ones. So, to ensure that there are going to be plenty of kakapos someday, perhaps these New Zealand birds should lay off of those yummy treats for a while. And, indeed, the population is already starting to recover from a shortage of female chicks.K. Ramsayer

Polly Shouldn't Get a Cracker
Polly Shouldn't Get a Cracker








Designed and Powered by HBJamaica.com™