Leito, A.
The all-Estonian count of Cygnus columbianus et cygnus in the spring of 1990
Rootsmäe, L.
Some notes by amateur ornithologists of ENS (III)
Saarela, H.
Notes on the breeding of Delichon urbica
Lelov, E.
Breeding raptors in South-Western Estonia in 1990
Elts, J.
Winter bird census notes in 1988/89 and 1989/90
Lilleleht, V. & Leibak, E.
Rarities in Estonia till 1989: report of the Estonian Rarities Committee