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Cardinal | Bird, Description, & Facts | Britannica
Northern Cardinal | Audubon Field Guide
Cardinal Definition & Meaning - Merriam-Webster
Northern Cardinal Identification - All About Birds
If You See a Cardinal, Here's What It Means - Birds and Blooms
Northern Cardinal - All About Birds
Cardinal | National Geographic
Northern cardinal | Diet, Habitat & Facts | Britannica
Northern Cardinal Life History - All About Birds
Northern cardinal - Wikipedia