Pumpkin

We have planted up 4 pumpkin plants- I donīt know the type- all I know is the fruit is a big orange coloured pumpkin....  I have planted them up in pairs.  One pair has at least 8 pumpkin coming, the other pair 4   Last year we got just one fruit, and mostly male flowers.  Our neighbour has just one pumpkin, so I guess I will share with them.
Iīve planted up turks turban and they are coming along well and orange dream and another that is a microwavable fruit- still waiting for those plants to get bigger. 
How many pumpkin is īnormalīon a plant?
Pamela
ps the hens roamed the veg patch last winter/spring, I guess they fertilized it well