Tony Leukering

The pale braces are distinctive for Blackburnian

Cooper's Hawk Ruby-crowned Kinglet Song Sparrow Savannah Sparrow Lazuli Bunting (note white wing bars)

DCFL is darker and without the strongly contrasting rufous wing panel that your bird shows

Most flycatchers -- in the US/Canada, anyway -- perch much more vertically. The postures in the good field guides (particularly Sibley) are accurate. Pay attention to them.

https://cobirds.org/CFO/ColoradoBirds/InTheScope/54.pdf

Skinny necks on the geese -- Canadas The duck is not any kind of teal (and Northern Shoveler is just a big, goofy teal) -- note the under-wing pattern, which looks fine for Gadwall.

Nope. It's a Black-and-white Warbler.

Thus a juvenile

More observing, less snapping

Agreed

Note the pale legs

Well-defined blackish streaking below with no cross-bars; tawny hood -- Cooper's

Merlins are also much more heavily streaked below

It looks like a card-carrying Western to me.

BEHAVIOR! Count the toes.