Cute loving couple of colorful ducks. Mandarin duck Aix galericulata female and male. Loving birds, animal love. Smooth background. Amorous look. European birds ...
Amazon S3 on MSN
Hidden physical features reveal a surprising secret about a duck
A close examination at Gold Shaw Farm reveals a hidden biological trait that provides new insight into duck anatomy.
Sperm Storage Tubules (SSTs) allow female ducks to store sperm for extended periods, decoupling insemination from fertilization and enabling delayed fertilization. Female ducks have more control over ...
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