Even if what you are seeing is sperm, which certainly makes sense, they wouldn't be sperm plugs. Sperm plugs don't contain sperm, they are just a thick waxy deposit to prevent breeding by other males.
If we want to call them sperm plugs, fine. But I am curious, has anyone actually looked for *sperm* in these "sperm plugs"?
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Lincoln, NE
Ball Pythons - 0.1 Pastel, 1.0 Pastel het Pied, 0.1 Pied, 0.1 Cinn, 1.0 Black Pewter, 1.0 Woma (hidden gene?), 0.1 Yellowbelly
2.1 Normals
Kingsnakes - 1.0 L. m. thayeri, 0.1 L. m. thayeri X L. alterna, 1.0 L. g. californiae
Other - 0.1 Whitesided P. catenifer sayi, 1.0 H. nascicus, ?.? Chrysemys picta, 0.1 crazy cat, 1.0 husband