The female is recognized by the yellow face, olive crown and with slight black on throat. The range is mostly the Northeast states and Canada. Their habitat is mainly conifers. I was only able to briefly view the Black-Throated Green Female Warbler as they passed through the area in only a short time. Other bird watchers pointed it out and had previously seen it.
You can see the sited location at the Wehr Nature Center, Milwaukee, WI by clicking the link below.