This is a video of a skylark at its nest, feeding its young.
From the YouTube text:
The skylark makes a grass nest on the ground. They breed on moorland, farmland, dunes and grassland. Generally the nests are very difficult to find, hidden between foliage.
3 to 6 eggs are laid in June. A second or third brood may be started later in the year. The eggs are yellow/white with brownish/purple spots mainly at the large end.
Like most other larks, the Skylark is a rather dull-looking species on the ground being mainly brown above and paler below. They are known throughout their range for the song of the male birds, which is delivered in hovering flight from heights of 50 to 100 meters, when a bird itself may be appear to be just a dot in the sky from the ground.
In 2006, Dutch daily Leidsch Dagblad of 6 June 2007 writes, breeding birds were counted in the flower growing region around Lisse in the Netherlands.
77 species of birds were found.
The most breeding species was the skylark, with 93 breeding couples.
Dupont’s lark in Spain: here.