It is almost as if they are only building on the cells with eggs in them first and then focusing on the others as the queen lays other eggs.
Has anyone seen this before? Does anyone know why they are building comb like this?
They are building comb like that because they are focusing first on the cells the queen laid eggs in.
The queen will often lay in partially drawn cells. Once the queen lays an egg in a partially drawn cell, the bees are forced to finish drawing that cell out completely in order to raise the brood.
This happens often when bees are started on foundation and the queen is constantly searching for any cell big enough for her to lay eggs in.