On 29 December 2001, while doing the Lake Mattamuskeet Christmas Bird Count, Norm Budnitz and I found a group of four Glossy Ibis with about 170 White Ibis on Sandy Dike, along the south side of the lake west of the causeway. Separation from the similar White-faced Ibis (Plegadis chihi) in winter plumage can be tricky if the birds aren't close and impossible if they're in juvenal plumage, but we were lucky with these - close looks in good light and not in juvenal plumage. All four were identified as basic plumaged Glossy Ibis by the band of pale blue-gray skin that bordered the dark facial skin. In addition, all had dark eyes.

With immature and adult White Ibis (Eudocimus albus).

This one seems to have a trace of juvenal plumage left, with some white spotting on the throat.