Coincidentally, I was having a good read of that site today.
is a link to the page on studying D.azureus in the wild (Surviving the Sipaliwini in Search of Dendrobates azureus).
"Tadpoles were discovered in water that had collected in palm cataphylls and boots. We observed, for one of the first times in nature, D. azureus tadpoles in the axils of a bromeliad (Aechmea bromelifolia). Some adult frogs were found hiding in another bromeliad,..."