The Eastern Fox Sparrow, a songbird commonly found in the eastern region of North America, has a few synonyms that might be useful to birdwatchers and bird enthusiasts alike. Some of these synonyms include the Red Fox Sparrow, the Gray Fox Sparrow, and the Rusty Fox Sparrow. While these sparrow species are similar in appearance, there are minor variations in their coloration and markings. For example, the Red Fox Sparrow has reddish-brown feathers, while the Gray Fox Sparrow has predominantly grayish-brown feathers. The Eastern Fox Sparrow is a beloved species amongst birdwatchers for its beautiful song and distinctive markings.