The records consist of daily logs and banding data for birds observed at the Thunder Cape Bird Observatory.

Thunder Cape Bird Observatory (TCBO) is a joint project of the Thunder Bay Field Naturalists, Ontario Ministry of Natural Resources - Wildlife Assessment Program (OMNR-WAP), and Bird Studies Canada, working in partnership with Sleeping Giant Provincial Park, and the Canadian Coast Guard. (TBFN)

Nigel Juhtund was a resident of Schreiber. He was a bachelor and worked in a lumber mill in Terrace Bay. He was originally from the Baltic region of Europe. Juhtund recorded all of his bird sightings for the Schreiber area from 1952 until 1985. The Federation of Ontario Naturalists honoured his work by granting him an award at their annual conference in 1990 held in Thunder Bay.

The fonds consists of bird observation data and summaries of the data. The fonds consists of the following series:

1. North-Shore Bird Sightings
2. Field List
3. The Summary of North-Shore Birds
4. Bird Nesting Period Summaries

The fonds consists of notes, correspondence, bird observation data, and the natural history journals of Dr. Allen. The fonds contains the following series:
-Dr. A.E. Allen Bird Observations
-Natural History Notes of A.E. Allen
-Dr. A.E. Allen Ephemera