Extra calcium for garden birds when it matters most give garden birds a nutritional boost with the calcium boost peanut cake square. Based on our trusted original peanut cake recipe, it contains 10 times more calcium, helping birds access this essential mineral during periods of increased nutritional demand, particularly throughout the breeding season. Combining high-energy ingredients with added calcium, vitamin d3 and phosphorus, this carefully developed recipe offers a convenient way to supplement the natural foods available to garden birds throughout the year. Targeted calcium support calcium plays an important role in maintaining strong bones and supporting healthy muscle function. It's especially valuable during breeding season, when female birds need additional calcium to develop strong eggshells. The calcium boost peanut cake square contains 10 times more calcium than our original peanut cake recipe, helping provide extra support when birds may benefit from it most.