I have two hens.
One is a fat hybrid that lays all year round and thinks it's a dog. Dog chicken looks like the top picture.
The other is a Dutch bantom that is scared of its own shadow and won't let us within 10m of it but only lays for 5 months and for the rest of the year looks like the bottom picture.
The keys I received during my education years were all deactivated sometime after I left university.