The Small White was resting on a mustard plant leaf, under partly sunny skies, with a stiff cooling breeze off the bay that was making feeding a challenge, not only by causing the plants to buck and wave in the breeze, but also (perhaps) negatively affecting the production of nectar. 19 C.
The Sulphur were all favouring the hawkweed for sustenance on this sunny and clear morning, 23 C.