Printer Friendly
The Free Library
14,702,589 articles and books
Member login
User name  
Password 
 
Join us Forgot password?

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 List of Thieves. Famous
  • Danielle Bethel
  • Bruce Reynolds
  • Ronnie Biggs
Mythological
  • Prometheus
  • Tantalus
  • Hermes
  • Autolycus
Historical
  • Soapy Smith
  • Adam Worth
  • François Villon
, the birds go to extra trouble to save their hoards.

Among western scrub jays scrub jay
n.
A blue and gray jay (Aphelocoma coerulescens) with a long slender body and no crest, found in dense brush or scrub especially in the Florida peninsula.
, 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 cube, in geometry, regular solid bounded by six equal squares. All adjacent faces of a cube are perpendicular to each other; any one face of a cube may be its base. The dimensions of a cube are the lengths of the three edges which meet at any vertex.  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 beak
 or bill

Stiff, projecting oral structure of birds and turtles (both of which lack teeth) and certain other animals (e.g., cephalopods and some insects, fishes, and mammals).
, it would poke See peek/poke.

poke - The BASIC command to write a value to an absolute address.

See peek.
 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 University of Newcastle can refer to:
  • Newcastle University, a university in the United Kingdom.
  • The University of Newcastle, a university in New South Wales, Australia
 in England. The term "birdbrain bird·brain  
n. Slang
A person regarded as silly or stupid.



birdbrained
" may be a compliment after all!
COPYRIGHT 2006 Science Service, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2006, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

 Reader Opinion

Title:

Comment:



 

Article Details
Printer friendly Cite/link Email Feedback
Author:Sohn, Emily
Publication:Science News for Kids
Geographic Code:1USA
Date:May 24, 2006
Words:359
Previous Article:Germ zapper.(Brief article)
Next Article:Missing moose.
Topics:



Related Articles
GOOD SPORTS PROFITS FROM BUSINESS HELP PROMOTE YOUTH ATHLETICS.(News)
KEVIN SMITH GROWS UP THE DIRECTOR OF 'DOGMA,' 'CHASING AMY' TAKES RESPONSIBILITY FOR HIS OWN ACTIONS.(L.A. Life)
Birds with a criminal past hide food well.(Brief Article)
CHIPPER CHRISTMAS OFFICERS PLAY SANTA TO GRIEVING FAMILY.(News)
HOT WHEELS CHARITY BIDS FOR 'TONIGHT' BIKE REVVING UP ON EBAY.(News)
The pit bull of plains.(Letter to the Editor)
Hawaii with Omar.
Jay watch: birds get sneakier when spies lurk.(This Week)
RICKY JAY WORKS HIS MAGIC WITH `52'.(U)

Terms of use | Copyright © 2009 Farlex, Inc. | Feedback | For webmasters | Submit articles