Milvus (previously Birds in Wales and Welsh Birds) is the official journal of the Welsh Ornithological Society. Three issues are published per year, as standard. Additional Special Issues may be published, when appropriate.

1. Devoted entirely to original articles.  All articles appear in the printed version that is usually published in June/July. One article per issue may be made available as Open Access concurrent with the printing of the issue.

2. The annual Scarce and Rare Birds Report (currently edited by Jon Green) that is available online to members only. 

3. The Welsh Bird Report and the annual report on bird ringing in Wales (currently edited by Julian Hughes).