Back to the BWBS	Quick Reference Guide and
	Documenting Unusual Birds

COMMONLY CONFUSED SPECIES Please refer to a field guide to birds for assistance. When you see any of these species, check the majro features listed below to help tell them apart. Usually a combination of key field marks is needed to make a positive identification. House Finch and Purple Finch These two species look very similar in size, shape, and color and are difficult to tell apart. Both are slightly larger than a chickadee with a thicker bill and a reddish color on the males. The females are all brown on the back with a streaked breast. The House Finch is usually more common than the Purple Finch. House Finch Mostly square tail (male) fire engine red some streaking on sides of breast solid brown on back (female) all brown head Purple Finch Deeply notched tail (male) "dipped in" raspberry juice very little/no streaking on breast some color on back with brown streaks (female) white eye stripe on head Chipping Sparrow American Tree Sparrow and House Sparrow Chipping Sparrows migrate farther south for the winter and are not usually found in New Hampshire until May. In February, they are in their winter plumage, which does not have a rusty cap. The slightly larger Tree Sparrows are frequently called "Winter Chippies" because they resemble our Chipping Sparrows of summer but appear here only in the winter. Both Tree Sparrows and Chipping Sparrows have a brown back, and white breast but in the winter, only the Tree Sparrow has the rusty cap. Although the Tree Sparrow has a spot on the breast, it is not always visible and the absence of a spot is not reliable for identification purposes. Male and female look alike in both species. Female House Sparrows, usually found in more urban areas and near farms, may also be confused with winter Chipping Sparrows. American Tree Sparrow rusty cap gray line above eye small rusty line through eye grayish-white breast, sometimes with a spot Chipping Sparrow (winter) brown cap, may be lightly streaked--not rusty dull white line above eye slight dark line through eye--not a black line grayish-white breast House Sparrow (female) brown cap, no streaks brownish-white line above eye slight dark line through eye brownish-white breast Sharp-shinned Hawk and Cooper's Hawk A hawk at the feeder is often one of these two species. The difference between the Sharp-shinned Hawk and the Cooper's Hawk is subtle, and even veteran hawkwatchers have trouble telling them apart. The Cooper's is threatened in New Hampshire, and is not as common as the Sharp-shinned. Both species feed on small, woodland songbirds and look identical, both as immatures and adults. In general, the Cooper's is larger then the "Sharpie" but the female Sharpie can be the same size as the male Cooper's. This often makes positive identification very difficult unless you have an obviously smaller Sharpie or an obviously larger Cooper's. Both species are Accipiters, with rounded wings and a long tail, although the Cooper's tail appears rounded and slightly longer. If you can photograph the bird, we may be able to help you identify it correctly. Try to get something in the picture that will help with a size reference. If you are unsure which of these two species it is, please record it as "Sharp-shinned/Cooper's Hawk."

Documenting Unusual Birds