Wildlife Spotting

Okay, Roy and Brian I am asking for more assistance. I was in the process of updating the spotting, but I could not get over the fact that in the one photo that shows the back of the bird it appears to me to have a green tint to its' feathers. In my research I could not find a Great Crested flycatcher that has this feature. I have several more photos that show the bird having the same coloring on the wings. I am now wondering if it could be a Couch's Kingbird. The physical characteristics are the same. The recorded calls I listened to were very similar to the Great Crested flycatcher. The Tropical Kingbird is also very similar, but the call did not match what we heard and San Antonio is not in its normal range. Now I am very confused. :) Any help would be appreciated.

Thank you both Brian and Roy. Yes, after a bit more research, and listening to recorded calls on a few sites I have to agree with you both. I will update the spotting. Thanks again for the input. The students and I really enjoyed having it visit us at our classroom window, and then seeing a pair out at recess!