Chapel Common  Chapel Common is a biological Site of Special Scientific Interest west of Fernhurst in West Sussex. A Roman road through the common is a Scheduled Monument. Most of the common is dry heathland but there are also areas of woodland, grassland and scrub. Heathland birds include three internationally important species listed on Annex I of the EU Birds Directive, woodlark, nightjar and Dartford warbler. The site also has rare and scarce invertebrates. Several public footpaths cross the common.