The afternoon of 7 December 2012, I saw and heard 4 Red Crossbills fly over while I was hiking the Chisos Basin Loop Trail. From my naked eye observation all 4 appeared yellow. Take whatever mix of age and gender possibilities that could be made of.
If someone reading this is in the Chisos Basin cottages or lodge, or is heading up there today, maybe you'll be lucky during your hike. The Red Crossbill invasion this year has been great, if not frustrating. Frustrating because in all, but perhaps a single case in Van Horn, these birds suddenly appear then don't stick around for a following day or evening a following hour.