Monarch butterflies coinciding with American passerines in Britain and Ireland in 1968 01 January 1975 Comments Main paper ... Read More
Photographic studies of some less familiar birds: Sooty Tern 01 January 1975 Comments Main paper ... Read More
FIELD-NOTES ON WHITE FEATHERING AT THE BASE OF THE BILL AND WHITE UNDER TAIL-COVERTS IN THE TUFTED DUCK 01 January 1975 Comments Main paper ... Read More