RNA editing is greatly reduced in Adar^hyp mutants (assayed through RNA editing of para).

Adar^hyp mutant males exhibit relatively robust locomotor activity, with no obvious uncoordination.

In Adar^hyp males, peaks of morning and evening activity are present but reduced in amplitude compared to controls. Anticipation of morning, but not night, is completely abolished.

Adar^hyp males exhibit a 4-fold increase in the time taken to initiate courtship relative to controls. Despite this, the overall length of time spent courting does not significantly differ.

Courtship pulse songs from Adar^hyp males often exhibit abnormal waveforms characterized by polycyclic pulses and additional peaks. This change in waveform is accompanied by alterations in several other song parameters, including a reduced number of pulses per song train, an increase pulse frequency, and a small but highly significant increase in the inter-pulse interval. There is also a striking variability in the Adar^hyp pulse waveforms, even between distinct song trains from the same male.