2 Cuckoos calling in the reserve at 11.00am when I arrived. One was close to the boardwalk but flew off almost immediately giving good views in flight; the second one continued calling for about 10 minutes, then fell silent and did not show again. I bumped into Steve Strutt 15 mins earlier in Grangemoor Park and he had just come from CBWR and did not see anything so they must have been just passing through. Hard luck, Steve!