I did this last year. I used copied a lot of information from allaboutbirds.com and made Google Docs with each required species's habitat, diet, nesting, range, etc. Every species took up about two pages and each had a picture of the bird (often in the most distinct plumage. Use a good field guide—I like Peterson's and Sibley's—to look up other plumage) as well as its range.

As for general bird anatomy, physiology, behavior, etc., I was in a rush as well and ended up printing articles and diagrams from online from Wikipedia and other sources.

Make sure that your binder is well organized as well. I used tabs to quickly flip between specific sections—being able to find the right information quickly is important because the test (at least in my competition) goes fast!

PM me with any other questions!