Online Guide to Wisconsin Bird Eggs
This searchable database is designed to assist in the identification of bird eggs for species that breed in Wisconsin and nearby states. CAUTION: See WBBA II Handbook for guidance on handling eggs/nests.
Cornell Lab of Ornithology’s NestWatch Program
The “Learn” tab of the NestWatch website has many great resources, including this one. CAUTION: WBBA II is not associated with the NestWatch Program. Please follow WBBA II field and data entry protocols.
