Four Season consists of 'Blue Jay, Cardinal, Chickadee or Yellow

Bulletin #7124, Bird Feeding Basics - Cooperative Extension Publications - University of Maine Cooperative Extension

The Yellow Northern Cardinal, A Year Later — The Naturalist's Notebook

Autumn Birds My Gardener Says

Blue Jay Identification, All About Birds, Cornell Lab of Ornithology

Clay-colored Sparrow Maine Birding Field Notes

Managing Backyards and Other Urban Habitats for Birds

Backyard bird identification guide –

Rare Yellow Cardinal Photographed in Alabaster, Alabama

This bird feed for outside feeders contains over 70% sunflower seeds Attracts wild birds like bushtits, cardinals, chickadees, grosbeaks, jays,

Lyric Cardinal Wild Bird Seed - Sunflower & Safflower Premium Bird Food Mix for Cardinals, Grosbeaks & Blue Jays - 3.75 lb bag

Cardinal - Song Of America