Some Hermit Thrushes (HETH) and Myrtle Warblers (MYWA) will stick around during winter with the MYWA switching to a berry diet of dogwood, sumac, etc. One of the diagnostic features of a ATSP is its dark breast spot. However, this bird (photo to the right) does not show this field mark but does possess the other identifying features including the bi-colored bill, chestnut cap and wings and clear breast. Just goes to show not all birds look like the photos or pictures in the book.
We still had nine species of warblers for the week including: Orange-crowned (OCWA), Nashville (NAWA), Cape May (CMWA), Black-throated Blue (BTBW), Myrtle (MYWA), Blackpoll (BLPW), American Redstart (AMRE), Ovenbird (OVEN), and Northern Waterthrush (NOWA).
A couple of warblers caused minor confusion for our great volunteers this week, so thought we would share:
|OCWA left and NAWA right|
Note: OCWA has split eye ring and NAWA has complete eye ring and yellow throat
|Backs of OCWA and NAWA: OCWA is slightly larger|
|Both OCWA and NAWA have yellow undertail coverts|
|SSHA: courtesy of Laura Gooch|
|Pine Siskin: with yellow on primaries and retrices|
|PISI: possesses a considerable amount of yellow on its back, a trait|
that you do not always get to see when it visits your feeder or in the field
|WIWR-left and HOWR-right|
Note: WIWR is darker on underside than HOWR
|WIWR is smaller and has a more pronounced eye line than the HOWR.|
|WIWR left and HOWR right:|
Undertail coverts are dark on WIWR and light on HOWR
This corresponds to the light and dark undersides of both birds mentioned above.