They are an obvious migration watch point, but are under watched. They are however popular with the public for dog walking, hand gliding and Kite flying, and so can be subject to much disturbance.
They are linked by a Byway encompassing the Wayfarer's Walk and Test Way, extending into Wiltshire to the West and Hampshire to the East.
They can be accessed from Kintbury to the North via Inkpen, or from Newbury via Hamstead Marshall and West Woodhay.
Walbury Hill was the site of a stone age Hill Fort. An un-excavated long Barrow and a Gibbet sit on Gallows Down to the West.
Three rough parking places exist. The first is by the Gibbet on Gallows Down, SU365622 and is entered by a chalk track. Opposite this track sits an enclosed car park at SU370621. A final parking place exists to the east of Walbury hill at SU379616.
The area is a mosaic of sheep grazed fields, with clumps of Gorse and several large stands of tree's particularly on the Southern slopes.
The Northern slopes of the hills are perhaps too steep for good observation but Skylark, Meadow Pipit, Linnet, Goldfinch and Yellowhammer abound. Both Marsh and Willow Tit are reported from the vicinity.
There are plenty of Corvids, including now regular reports of Raven.
On Inkpen Hill the Bridleway has a thick hedge along its Southern side and hold Garden Warbler, Whitethroat and Willow Warbler as well as the commoner Wren and Chaffinch. Obviously a good place to look for migrants.
A footpath south from the eastern parking places runs across Sandpit Downs to Lower Farm. It gives a good view across the Southern slopes of Walbury Hill and a good place to watch for Buzzard, the commonest Raptor in the area. Kestrel are also common, with occasional Sparrowhawk, Peregrine and one record of roosting Barn Owl.
South from Inkpen Hill lays Combe Woods. It contains Buzzard, Great Spotted Woodpecker, Marsh Tit, Goldcrest and Bullfinch.
I've seen plenty of larger Gulls flying North and South over the gap between Walbury and Inkpen Hills and if the site was more intesively watched it could indeed turn up something special.