No.So how do you think Crusoe was made Welsummer hen and EE roo??
I don't know what a Danish Brown Leghorn is, but I'll assume it's the same as any brown Leghorn. It's all coming together... I think a brown Leghorn is your culprit. Your EE has the mahogany gene (and clearly at least one copy of duckwing.)YES!! I had 2 Danish Brown Leghorn hens this summer. Why?
A Welsummer genotype looks like this eeMhMh
Your EE's genotype could be eeMHMH, ewheMhMh, eeMhmh, or eewhMhmh. Plus the blue gene.
Your brown Leghorn's genotype would be eemhmh.
Crusoe's genotype is eeMhmh. So she has a nearly identical genotype to a Welsummer, even though she's not related. Crusoe is half Leghorn.