Can a trust beneficiary claim rental income in personal taxes while trustee is alive

Rental property & Beneficiary are in the same state and that state is different from trustee state. If a child is a beneficiary in the trust, can the beneficiary file the rental property income in their personal income tax for that state while the trustee is alive?

 

Trustees: parents in state1

Beneficiaries: children (>18 age) in state2

Rental Property: title is on Revocable trust & in state2

Can one of the children claim the rental property income in their individual income taxes while parents are alive and parents do not include that income in their taxes?