Someone Else Missed the Text on Migration: Hooded Orioles in my Backyard

Spring is such a wonderful time along the Tuolumne River as I eagerly await the arrival of my favorite tropical migrants: the Black-headed Grosbeaks, Blue Grosbeaks, Bullock's Orioles, the Lazuli Buntings, and perhaps my all-time favorite, the Hooded Oriole (Icterus cucullatus). But the birds have not entirely cooperated this year, as I discovered that a Black-headed Grosbeak was in fact wintering along the Tuolumne River. But even in that context, today was a real shocker.

I just happened to look out the window at the hummingbird feeder this morning and saw an unusually large bird perched there. I realized with a shock that it was a Hooded Oriole! Such things need documenting, so I grabbed my camera and got a few shots before it flew off. I thought it might come back after a bit, so I kept the camera handy and sure enough a few minutes later it came by again, and gave me a sharp stare. But then, the another surprise...

A few minutes later the Oriole had come back, but when I looked at the tail, I realized it was not the same bird. The tail was yellow, not black. This was a second Oriole, and it was a female! I never got  shot of the head, so a picture of a bird butt will have to suffice. The birds came back about five hours later, and I got a more convincing look at the female, but no pictures.

This is actually the second time that I've witnessed a Hooded Oriole pair over-wintering near the Tuolumne River. There was a pair that spent the 2020 winter in some palm trees overlooking the Tuolumne River Parkway Trail, and I am curious as to whether these are the same birds. If they have a secure winter food source, why make the perilous journey to Mexico and Central America? My yard is only a half mile from the palms where last year's birds stayed.