Adult White-crowned Sparrows are quite distinctive with black crown-stripes and broad white "eyebrows".
The photos shows an immature White-crowned Sparrow; it is grey and brown overall with brown crown-stripes.
In the South-West of the US, immature White-crowned Sparrows can sometimes easily be confused with Chipping Sparrows.
However, White-crowned Sparrows have a clear orange bill whereas Chipping Sparrows have a darker, more pinkish bill.
Rio Bosque Wetlands Park, El Paso, Texas, USA, 18 January 2019