Check out golden crowned kinglet in your field guide. This is the only species I can think of that has a yellow stripe.
There are a great many birds with yellow breasts. Without knowing exactly where you saw it and what it was doing, the size, and other markings, there is no way to answer your question.
The yellow bird is most likely a yellow crowned Kinglet and the other a red crowned kinglet
That bird is called a western goldfinch.
Interesting. You are the fourth person to ask about this bird that I've seen so far. It is a Northern Flicker, specifically the "Yellow-shafted" morph, nicknamed "Yellowhammer". It is a species of woodpecker.
This bird you have been seeing is a blue jay! (If not that it is a white-breasted nuthatch) Happy to help!
The meadowlark is yellow with a black chest.
There are far too many birds like this to identify this bird. You need to describe it in more detail - such as its size and bird type.
Check a field guide for meadowlark, eastern or western.
Check your field guide for the eastern meadowlark.
hoopoe ?
could be ptarmigan
If the black is the crown of the head, and you can notice a patch of red under the tail when it takes off, it is a catbird.
Please give more information- where you saw the bird, what it was doing, country, landscape, size, beak, etc.