Found this

[SilverBirds]

Welcome to BYC! Lash material, as some of the others have said. You can find lots of info about it on this site.

 

[Yorkshire Coop]

Welcome to BYC @BearFix

 

[Kenneth Zweerink]

Welcome to BackYard Chickens. And a Big Hello from Eastern Nebraska!

 

[featherhead007]

Come on in. You can leave the lash egg material outside. You want any meally worms ?

 

[triciayoung]

It's a lash egg. Do an on site search for more information.

Welcome. Me too, ditto what @sourland said.

 

[Tookie]

Hi! Welcome to BYC!

Like already mentioned, that's a lash egg.