Born in Norway, zoologist Leonhard Stejneger (1851-1943) left for the United States in 1881. He had already produced ornithological field notes, published a book and described his first bird, Lanius bairdi. Upon his arrival in the U.S., he began working with birds of the New World. Stejneger kept this diary during a 1900 trip to Puerto Rico and the West Indies from early February to the end of April. Most of his entries describe the events of the day with some mention of collecting birds, lizards, and bats. Join us in transcribing this diary and get a glimpse of the day to day experiences of this noted zoologist.