This pen was easy to put together.  It is lightweight, but sturdy enough to hold your poultry.  You can move it around from place to place easily too (will take 2 people, one carrying each end).  I wouldn't make bets on whether it would withstand an attack by some big dogs trying to eat your birds though.  It will easily hold lots of baby chicks, or about 4 adult chickens or ducks.  However, the space between the wires is about 1 1/2", and newborn chicks may be able to fit through and escape.  My 6 baby ducks love it.  I leave them in it by day and bring them inside at night where they are safe.  I will be using it every year for my baby chicks & ducks, until they are large enough to put in with the adults.