example of behavioral camouflage. It feeds on the leaves of shade trees and 
     
     if disturbed will stiffen and angle itself to look like an ordinary twig on 
     
     the tree. Measuring worms feed for approximately one month on leaves and then 
     
     drop to the ground on a silkthread where they will pupate underground without 
     
     a cocoon. Measuring worms are not considered a threat to our trees since they 
     
     occur in small numbers, and have many natural enemies, in birds and other 
     
     insects. 
     
    
   
   
    
     Margo Guignion 
     
     Green Meadows 
     
    
   
   
    
       
     
    
   
   
    
       
     
    
   
   
    
     Color Marked Black Ducks on P.E.I. 
     
    
   
   
    
       
     
    
   
   
    
     Earle Hickey, one of our members, requests information on sightings of any 
     
    

    
     of his color marked Black ducks. He is studying movements and behavior of 
     
     Black ducks on P.E.I. Previous work suggests that a portion of the P.E.I. 
     
     population of Black ducks are non-migratory. Some stay over winter and 
     
    

    
     breed on P.E.I., while the majority migrate south within the Atlantic 
     
    

    
     flyway. In order to record movements of individuals in their natal marshes 
     
     and on P.E.I. generally, Earle has attached colored plastic tags on the 
     
     patagium (front part of wing) of l22 Black ducks. These paTagial tags are 
     
    

    
     3 cm. x 7 cm. and are attached to both wings of the bird. There is a two 
     
     letter code which is visible when the bird is on the water or standing on land. 
     
     Male Black ducks, captured in summer carry white tags and females have orange. 
     
     Wintering bird. will also be marked and will bear red tags (males) and yellow 
     
     tags (females). 
     
    
   
   
    
       
     
    
   
   
    
     The letter code on the patagial tag can generally be read within 200 feet with 
     
     a telescope. Earle would appreciate any sighting, recapture or recovery 
     
     information. He will send observers of a marked Black duck information on 
     
    

    
     its place of capture and previous sightings. If the letter code cannot be 
     
     read, information on colors of patagial tags observed will still be useful. 
     
    

    
     If you see one of these color—marked Black ducks record date,time, place, 
     
     weather,colo s on tags, letter code (if possible), habitat and behavioral 
     
     activities. send your observations to: 
     
    
   
   
    
     Earle Hickey, Jr. 
     
    

    
     Fish 8 Wildlife Division 
     
     P.0. Box 2000 
     
     Charlottetown, P.E.I. 
     
    
   
   
    
       
     
    
   
   
    
     In Defense of the Majestic Oak 
     
    
   
   
    
       
     
    
   
   
    
     Niagara-on-the-Lake: Just when it looked as if it might be winging its way to 
     
    

    
     that great orchard in the sky, Ontario's largest, and possibly oldest, oak tree 
     
    

    
     seems to have received a reprieve. The tree, l07 feet high, 23 feet in 
     
     circumference, and 600 years old, was recently dying of old age, disease and 
     
     malnutrition. Now, however, the alumni association of the Niagara Parks Commission's 
     
     School of Horticulture, the Niagara ConserVation Authority, businessmen and 
     
    

    
     concerned citizens have rallied to the great oak's cause. About $5,000 have been 
     
     pledged to help with the restoration of one of the country's most majestic and 
     
    

    
     oldest living pieces of heritage. 
     
    
   
   
    
     Heritage Conservation 
     
     Vol. 2(h), l976 
     
     Submitted by: Wendell MacKay