shores sunset snettisham's nuptial coastal dunlin golden migration undertake their flocks silhouetted post serene a evening

pattern water sky travel nature autumn sunset silhouette bird environment natural wildlife fauna england ornithology seasonal avian habitat coast twilight birdwatching wetland coastal dusk shore flight golden hour evening reflection conservation ecotourism wader migration estuary tidal outdoor balance flock dunlin birdlife journey calidris canutus landing migratory passage postnuptial scenic seascape snettisham tranquility