Growing rapidly

My main and the extra are two photos of the same nest, but 4 hours apart. It is amazing to see how fast these little birds grow.
Born yesterday, naked, blind. A day later we can see little beaks opening, showing above the nest edge, obviously begging for food. The mother already started to feed them with little worms.
Also the down feathers start to grow. If you compare both pictures you will see that the feathers get thicker.
More to follow tomorrow!