What should be done with the portion of the tag meant for reporting to the department?

The portion of the tag meant for reporting to the department should be ripped off and mailed immediately after the required information is filled out. This is essential for ensuring that the California Department of Fish and Wildlife has accurate and timely data regarding trapping activities. Reporting is crucial for wildlife management and conservation efforts, as it helps the department monitor populations and assess the impact of trapping on various species.

Immediate reporting allows the department to gather information quickly, which can be critical for making informed decisions regarding regulations, population estimates, and habitat management strategies. Delaying the reporting process could hinder the department's ability to manage wildlife effectively, as the data would not be compiled in a timely manner.

Keeping the tag for personal records or returning it at the end of the season does not fulfill the immediate reporting requirement. Discarding the tag altogether would also prevent the department from receiving necessary data, which is vital for the overall health of wildlife management practices in California.