Cannot find this bird

by Cathy
(Northeastern Utah (Vernal))

One morning I noticed two birds pecking at the food I had scattered on the ground. They had bright sky blue heads, back and tail. The belly was bright yellow with a rusty band at the top. The wingsbars were black, and yellow or white. They were amazing! Have not seen them since...much have been making a pit stop on their way to somewhere. Anybody know what they are?