Mealworms Are An Excellent Source Of Protein-rich Food All Year Round For Insectivorous Birds Like Robins & Tits. mealworms Are Particularly Good For Putting Out In Hanging Feeders & On Ground Feeders At Certain Times Of Year When The Number Of Naturally-occurring Insects Is At A Low, Including When The Weather Is Bad & During The Cold Winters When Many Insects Have Reverted To Shelter & Cover. by Putting Out Mealworms You’ll Be Supplementing Their Natural Supplies, & This May Just Be The Thing To Ensure Your Garden Birds’ Survival. put Mealworms Out Too In Summer When Fledglings Are Exploring Your Garden. Fledglings Develop At A Fast Rate & Use Up Lots Of Energy To Explore Their New Surrounding While Keeping Aware Of Potential Dangers. Mealworms Provide The Energy & Protein To Keep Them Active, Alert & Responsive.