17 in and circle the reed beds. She was a large, mature bird with glossy, mottled dark brown plumage, relieved by the yellow head and coverts which showed well in the last rays of the sun. She may have wintered in this country, but usually the birds who visit this marsh during the summer have travelled many miles from warmer climates than ours. Most only visit for a day or two, but a few have stayed to build a nest and raise young. She was seen in the area, hunting the surrounding fields but returning to the marsh as though she had chosen the reed beds as her territory. Other Harriers were seen flying over and then one male was seen to be staying a while and circling the marsh. He was judged to be a young mature adult, and our female bird was obviously interested. They began their courtship display. Both circling above the marsh and the male tumbling down towards her; sometimes she would fly up to receive the food he would pass to her. These were very hopeful signs to the Watchers as soon twigs and reeds were being carried to a far part of the reedbeds, which is relatively free from disturbance, near to a line of dead trees. The marsh was full of activity by now. Coots were building their untidy platforms, Bearded Tits were flitting and 'tinging' backwards and forwards over the reeds and Black-Headed Gulls were squabbling over nest sites on small islands in the open water. Migrating waders