Both the Kingfishers are now regularly around the nest whole and the amount of time she is spending in the hole is suggestive that we may have moved beyond the 'just good friends stage...
Normally the best way of separating the sexes is by the completely black bill on the male and the red lower mandible of the female.
Our male is little peculiar in also having a touch of red on his bill but as you can see in these fantastic images he has nowhere as much as her!
The male after burrow digging.... the best images yet.... (Don Gray)
and here is his lady friend.... (Tom Bell)
26-3-14