Later: I went to bed very early for me, but woke at 6:00 a.m. for no apparent reason.
I gave up trying to go to sleep at 7:30 a.m. and had breakfast. I lay down again for a little while after breakfast. I went out to work in the yard at noon. Mostly I ended up breaking dead branches off the winter honeysuckle and cutting down wild grape vines.
The daffodils that I'd cut yesterday, when only a little bit of yellow was showing as the sheath over the bud opened had fully opened by this morning. They're the classic trumpet daffodil type.
In the evening, I watched the first episode of Captain America and the Winter Soldier.