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December 2020
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ONLINE NEWSLETTER
 
FACT OR FICTION? You can tell a bald eagle from Catalina even at a distance.
By Alexa Johnson

This one’s true. At about eight weeks, juvenile bald eagles on Catalina are fitted with wing markers. The wing markers are orange. The markers allow biologists to identify each bird by color and a unique number, which is visible through binoculars or a scope – even from far away. You may also see blue wing markers on occasion. Blue markers identify birds with origins in the Northern Channel Islands. Sometimes the northern eagles pass by as transient visitors. Other times, they choose to make Catalina home. The female, known to scientists as A-37, was originally hacked on Santa Cruz Island and now resides in Middle Ranch.

DID YOU KNOW… Eaglets can’t regulate their body temperatures.



THE ISLAND NATURALIST
Issue #22 / All About Bald Eagles


IN THIS ISSUE...


In an Eggshell 
What to Expect
Fact or Fiction? Knowing Resident Baldies
Did You Know … Eaglets Need Moms’ Warmth    



Photo by Alexa Johnson

The eagle with the blue wing marker (A-37), seen via this telescopic image, was hacked from a tower on Santa Cruz Island, but now calls Catalina home. She and her mate (A-93) have a nest near Middle Ranch.



Photo by Jack Baldelli

The eagle with the orange wing marker (K-17) was released at the Bulrush hack-tower on Catalina Island in 1984. Her mate (K-33) is also a Catalina native, also adorned with an orange marker.


Missed recent issues?
Issue #1 / All About Bison

Issue #2 / All About Birds

Issue #3 / All About Plants
Issue #4 / All About Eagles
Issue #5 / All About Ravens & Crows
Issue #6 / All About Natives & Invasives  
Issue #7 / All About Rain
Issue #8 / All About Bison Roundup
Issue #9 / All About Foxes
Issue #10 / All About Weeds
Issue #11 / All About Eagle Hatchlings
Issue #12 / All About Snakes
Issue #13 / All About Diurnal Raptors
Issue #14 / All About Diurnal Raptors II
Issue #15 / All About Giants & Dwarves
Issue #16 / All About Fire Ecology
Issue #17 / All About Mule Deer
Issue #18 / All About Feral Cats
Issue #19 / All About Acorn Woodpeckers
Issue #20 / All About Tachi the Fox
Issue #21 / All About Observing Nature

 

 

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