Related topics: sperm · fertilizer · offspring · birds · embryos

Study finds evidence of ancient breeding of scarlet macaws

People were breeding scarlet macaws (Ara macao) in, what is today, New Mexico in the 1100s, according to examination of eggshell found at the Old Town archaeological site. The paper is published in the journal PNAS Nexus.

Sexing chicken eggs by scent

Fertilized chicken eggs can be sexed by "sniffing" volatile chemicals emitted through the shell, according to new work by researchers at the University of California, Davis, and Sensit Ventures Inc., a startup company in ...

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