GB- Four birds on one cover

From my good friend in Birmingham comes this neat arrangement of four birds on one cover.
First is the 1977  9p Grey Partridge (Perdix perdix), next to the elegant  2007 Pied Avocet   ( Recurvirostra avosetta). There's a 30 year age gap between these two !!!. Below them are a pair from the
1980 Wild Bird Protection series , White- throated dipper (Cinclus cinclus) and the Common Kingfisher (Alcedo atthis)

Great Britain- Returned to Sender

These birds were really celebrating the unique date on the cancels, 11-11-11. What a tremendous journey they had  while dressed in the finest double  twisted ring postmarks, all the way from Montagu Est, Newcastle Upon Tyne to China.... and back again, and still in good condition. The first stamp is from 1989 RSPB set , 32p Eurasian Oystercatcher (haematopus ostralegus). The other birds are from the 1980 4v set issued for Wild Bird Protection. 13p Common Moorhen (Gallinula chloropus),10p Common Kingfisher (Alcedo atthis), 11 1/2p White throated dipper (Cinclus cinclus). The bird covered by the RTS label is the Western Yellow Wagtail (Motacilla flava).