The Recorder - Speaking of Nature: A winter classic: the northern cardinal
Nature News: Cardinal behavior a welcome sign of spring
bioPGH Blog: Northern Cardinals | Phipps Conservatory and Botanical Gardens | Pittsburgh PA
Cardinals in Different Regions Could Actually Be Distinct Species, Their Songs Suggest | Smart News| Smithsonian Magazine
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Why the Northern Cardinal Is a Favorite Winter Bird
The Northern Cardinal - Schlitz Audubon
Northern Cardinal ⋆ Tucson Audubon
Cardinal Bird Facts | Cardinalis cardinalis, Piranga rubra, and others - AZ Animals
Northern Cardinal · Tennessee Aquarium
Bird of the week: Northern cardinal | Your Observer
A Northern Cardinal in North Austin
This rare male-female cardinal is 'something pretty special' | CBC Radio
Northern Cardinal (Cardinalis cardinalis) · iNaturalist
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20 Fun Facts About Cardinal Birds
Bird of the Month: Northern Cardinal | Mississippi State University Extension Service
WILD GEORGIA: Why Northern cardinal is called the bird of Christmas
14 Cute and Heartwarming Baby Cardinal Photos - Birds and Blooms
Northern Cardinal | Audubon Field Guide
Attract Cardinals to Your Yard: 7 Tips and 3 Things to Avoid
