An agricultural harvesting head (100) has a frame (102) that extends laterally and is elongate a left side conveyor (106) a right side conveyor (110) a center conveyor (108, 144) and an upper conveyor (118) of an endless belt type that is disposed to receive, engage and downwardly compress an upper surface of the cut crop material conveyed rearwardly by the center conveyor (108, 144).
