Can we draw the following hypothesis from the context? 

Context:

How to take care of ducklings<br>Find a brooding box. After ducklings have hatched from their shells and spent about 24 hours getting used to their new surroundings, they're ready to move to a brooder. A plastic storage container, sturdy cardboard box, or large glass aquarium can all work for this purpose.

Hypothesis: ducklings do not hatch out of shells