You can hear the pine siskin's distinct rising "bzzt" among the shorter calls of sparrows, goldfinches, and robins.
The harsh sound in the middle
Apple identifies this bird as a house finch
Ring-billed Gull
Not expecting any confirmation based on the photos, simply documenting the observation. The calls were confirmed as Ring-billed Gull via Merlin app.
A bunch of birds
The buzzing tweet, not the cardinal