宜必思出版反映鸟类科学研究活动前沿的原始论文，评论和简短通讯，但特别强调鸟类的保护，生态学，行为学和系统学。 宜必思的目标是尽快发布符合同行评审和正常发布限制的要求。
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.