宜必思出版反映鳥類科學研究活動前沿的原始論文，評論和簡短通訊，但特別強調鳥類的保護，生態學，行為學和系統學。 宜必思的目標是盡快發布符合同行評審和正常發布限制的要求。

Ibis publishes original papers, reviews and short communications reflecting the forefront of research activity in ornithological science, but with special emphasis on the conservation, ecology, ethology and systematics of birds. Ibis aims to publish as rapidly as is consistent with the requirements of peer-review and normal publishing constraints.