In the latest Bird Watchers Digest there is an article by Professor Doug Talamy about why it is important to know what birds eat. He states it is important because you can preserve and plant the right habitat to provide a food source for them so they can thrive. Apparently not all insects are of the same nutritive value and each insect has a specific habitat it needs. He has put out a request to birders to take pictures of birds bringing food/insects to their young. You can then submit them to his web site so his scientific team can identify the insect and add the information to a scientific data base. This information will be helpful in creating a better habitat for the birds. He states even a single image will be much appreciated. The web site is whatdobirdseat.com. The instructions may be on the site but in the article it says to upload the digital image. Include your name, date, the location the image was taken, and your best guess as to whether the bird was migrating (spring or fall), feeding young or overwintering.
Sounds like a fun, interesting and helpful project for us birders who like to take photos of what we see.