JUNK FOOD FOR HUMMINGBIRDS. I have been reading dozens of sites on the care and feeding of hummingbirds ... they all advise against adding red dye to the nectar (which can easily be made fresh by mixing sugar and water).  Here is what the Audubon Society says: "No, red coloring is not necessary and the reddening chemicals could prove to be harmful to the birds.  Natural nectar itself is a clear solution." Don't buy this junk food! If you care for these little flying jewels, you'll provide what's healthy for them and not give them anything that could harm them.