The League published a large number of his paintings and his birds were reproduced on more than two million membership cards. Cayley truly believed in the value of ornithology and in memory of his father, he created a scholarship in Economic Ornithology at Sydney University, to be administered by the League and funded by royalties from What Bird is That? The scholarship was eventually extended to post-graduate students involved in wildlife study or management relating to birds from universities around Australia.
The passage describes Cayley's dedication to ornithology and his efforts to promote the field through various means, including publishing his work, establishing a scholarship, and supporting further research in the area.