How can baby barn swallows that are only one week old disappear from a nest under carport?

It is unlikely for baby barn swallows that are only one week old to disappear from their nest under a carport or any similar open structure. They are altricial birds, which means they hatch in a helpless state and rely entirely on their parents for food and care.

Here are a few reasons why it may seem like the baby swallows have vanished:

- Predators: Baby birds are vulnerable to predators, such as cats, snakes, and hawks. Predators might sneak into the carport and take the baby swallows.

- Parental abandonment: Although unlikely, it is possible that the parent barn swallows have abandoned the nest. This can occur due to various reasons like disturbance, scarcity of food, or illness.

- Natural causes: Sometimes, baby birds may pass away due to natural causes such as illness, genetic defects, or malnutrition.

If you suspect the baby swallows have disappeared, thoroughly check the nest and the surrounding area for any clues. If you don't find any evidence of predators or parental abandonment, it's advisable to contact a wildlife rehabilitation centre for further assistance. They will be equipped to determine the cause of the disappearance and offer appropriate guidance on how to proceed.