...Late in June thefemales lay their eggs in clusters of a hundred or less onthe under surface of the leaves of various compositeplants, notably sunflowers, asters, and a common speciesof Actinomeris...
Clarence M. Weed 「Butterflies Worth Knowing」
...It has been assumed that if crows eat several million sunflowerseeds in the winter, the sunflowers growing in the farmers' fields thenext year will have been reduced by the same number...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
...However, like mostannual plants, sunflowers produce a great surplus of seeds each year...
Dwight Platt 「Food of the Crow, Corvus brachyrhynchos Brehm, in South-central Kansas」
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