Leave the M4 at junction 28. Take the A4072 North (signposted Caerphilly/Risca). At the first roundabout take the 2nd exit (left/straight on) onto the A468 towards Caerphilly. After several hundred yards take the left at the mini-rounderbout. After approximately 1.5 km bear either turn left onto Caerphilly Drive or continue for 250 m and turn right onto Pentre Tai Road. Parking areas for both options are described and shown in red on the map below. Please park sensibly with due deference to the local residents, parking in the community centre has been arranged from 07:00 (no charge). Do not park in either the 'Friendly Fox' or 'Rhiwderin Inn' pub car parks but feel free to stop in either for grub, etc.
There is a charge of £1.00 to ensure access across all of the fields in which the bird has been seen (there will be a bucket being rattled at the stile).
Follow on site directions for the bird. When walking around the site, please respect locals privacy and be aware there is a fair amount of horse-riding.
See map below (click on it for the full size version). Leave a comment or email gwentbirding(at)googlemail(dot)com if further info required.