The third egg hatched overnight I think. At first I could see the broken shell by the nest cup, then later as an adult came in to feed I saw three chicks. The photo clearly shows two of them, the youngest on the right. The nestling taking food is the second to hatch, now three days old. The swifts seem to have no problem finding food despite truly awful weather. Yesterday evening the winds were gusting near to 50mph but one parent was always out finding food. The other always sits on the young who would be very vulnerable to chill.