Crimson Columbine (Aquilegia formosa), photographed in Humboldt County on 25 May 2017.
If you were a hummingbird nectaring on a columbine flower, you might see this flower from a different point of view:
This is same flower, looking up at it from below. The yellow parts are the bases of the petals, while the red spreading parts are the sepals.
P.S. According to Wikipedia — the common name "columbine" comes from the Latin for "dove," due to the resemblance of the inverted flower to five doves clustered together. [And a note from me: The bird family that includes doves and pigeons is called the Columbidae.]