pica-pau-mosqueado vs rufous-crowned sparrow

The Northern Flicker and Rufous-crowned Sparrow are easily distinguished by their size and plumage. The Northern Flicker is a large woodpecker with distinctive flight feather shafts, while the Rufous-crowned Sparrow is a small, ground-dwelling bird with a rufous crown.

Look for the Northern Flicker's size and bright flight feather shafts. The Rufous-crowned Sparrow is much smaller and has a distinctive rufous crown.

The Northern Flicker is significantly larger than the Rufous-crowned Sparrow.

Northern Flickers have bright yellow or red shafts on their flight feathers depending on the subspecies, while Rufous-crowned Sparrows have a rufous crown and generally drab, brownish plumage.