Saw this bird in eastern Washington while in a backyard in the morning. Unfortunately my phone had just died so I couldn't use Merlin or take a picture so the drawing was the best I could do 😅

COLOR: I think? the bird was brown, it was hard to tell because it was really bright outside and it was repeatedly flying over my head. The most distinctive feature and the thing I 100% know I saw was that the bird had white semi-circular patches under it's wings.

SIZE AND SHAPE: Small bird, size of a sparrow or a finch. Very basic bird shaped, nothing distinctive about it's tail shape from what I remember. (Definitely not a swallow)

BEHAVIOR AND FLIGHT PATTERN: I was able to observe this bird for about 30-50 seconds (I'm bad at estimating time, but it wasn't long, it flew over my head 3 or 4 times) before it seemingly landed in one of the other backyard's trees. It was flying back and forth to the neighboring backyards before turning back and flying over the backyard I was in, singing the whole time. My memory of it's flight pattern (drawing attached) is a little faulty but I know I definitely saw it letting itself fall for a moment before flapping again, but it didn't do this on every single flap, it was irregular.

SOUND: It was letting out a lot of different noises but one that it repeated a couple times was something like "(higher pitched) eeee (slightly lower) eeeeee te te te". "Te" isn't quite the right word for the second noise but point is that it's calls were made of longer high pitched "whines?" (I'm so sorry I've never been good at describing bird call) and short beating calls. It sung while in flight and after it had (seemingly) landed.

LOCATION AND TIME: As stated earlier, eastern Washington in the morning

TLDR: Brown(?) sparrow/finch sized with white patches under wings. Seen in eastern Washington in the morning. Flew and sung at the same time and flew with irregular wingbeats. Song was irregular and consisted of longer higher noises and shorter harder ones. 

Any clue what bird this was??