When it comes to food, all the kids are usually in the nest. Otherwise, it's hard to see all four of them at home at the same time. 16:01 https://uploads.disquscdn.com/images/9ce5aa7bdf1549fa9c6a6ce1ece9b7ba6c9e177473dba1ce9d133a258794f8be.png

Age at permanent departure
• Average: 87 days
• Range: 73 to 108 days

Only two storklets spent the night in the nest https://uploads.disquscdn.com/images/28e60ac5f0e5dbd84085c474d7644c52946109253715532ab6a40e0b6dc65fda.png
All kids at home, maybe waiting for breakfast https://uploads.disquscdn.com/images/521b9b708e430a19a767f76bf6515f37edcda196696d093a85ef2a4bc5594963.png

Dad Królewicz is feeding three of his kids in the nest. The (probably) fourth one is flying by down below. https://uploads.disquscdn.com/images/e483632985a0d6966870305d8ffbed634860b018937287ae51cb667fdec48f03.png
In chat, someone wonders why this kid isn't in the nest, too, and receives the response: "These are their first flights; they have to learn—it's not that easy to “find” their way back to the nest."

Three home for the night https://uploads.disquscdn.com/images/c7cecefb1452482b6a3b4e8dde69b8d6e6afd442f032fc74ca5af0f9f28ec9ef.png

Age at permanent departure:
• Average: 87 days
• Range: 73 to 108 days

Before their definitive departure for migration, the fledglings initially fly within an average distance of up to 200 meters (~218,7 yard), and as they get older, this distance increases to an average of up to 500 meters (546,8 yard).

1st and 2nd storklet: 68 days old; 3rd and 4th storklet: 67 days old

Age at maiden flight:
• Average: 65 days
• Range: 60 to 73 days

Age at permanent departure:
• Average: 87 days
• Range: 73 to 108 days
(from forum)