First boxed hen

I´ve put the first broody hen of the year to box.  She´s been determined to brood for a couple weeks, daily protesting the removal of her clutch.  I´ve relented, and put her on three pretty blue eggs (Ameracaunas).  I hope she can do it;  she´ll be the first of my Silkies to sit on a clutch of alien eggs.  If it works, it will be an ugly duckling situation.  My last attempt at egg swapping was rejected - they rolled the big eggs out and down the ramp.She´s not a very good-looking hen; in fact, she´s an unusually ugly little lady, but she´s feisty and single-minded, keeps her eggs tidy (not allowing them to spill out),  and has been steadfastly resisting my attempts to break her up, so she might turn out be a great mother.