THEMAPHILA (B) – Belgian association of thematic philately

Motivgruppe Ornithologie (D) – Philately for bird lovers

http://www.mg-o.de

Bird Stamp Society (UK)

Aves Philatelicae Scandiae (S)

ATA Biology Unit – Study Unit Biology (Animal and plant life)

S.P.A.P. (Study Unit stamps André Buzin)

Birds stamp e-mail group

http://groups.yahoo.com/group/birds-on-stamps/