I have found that lorikeets are not so much of a problem to keep as people think.
The aviarys I use are a 4ft X 8ft housing section (enclosed due to the winter wind temperature in the UK) connected to a 10ft X 8ft flight.
This is larger then necessary a 4ft X 4ft housing section with an 8ft X 4ft flight would be sufficient per pair.
I use a simple wooden frame with shiplap board for the housing section and 16 guage 1" square mesh for the flight.
I use plastic corrigated sheets for the roofing on the housing section.
It is important that the roofing section in the house is covered with wire mesh on the framework before the corrigated sheets are fitted, this will prevent any escapes should the sheeting break for any reason.
The whole aviary is sited on paving slabs which are not set and have a half inch gap between them for drainage.
In the housing section I have attached small bull dog clips from which I hang sheets of newspaper. You need to ensure that there are no perches near of they will rip the paper up.
The newspaper only needs to go about three quarters of the way up the walls with the perching being higher.
This makes cleaning very easy, no scrubbing or jet wash needed!
On the floor in the housing section I use pine woodchips which soak everything up. The flight just needs an occassional hose, infact the rain here cleans it very well.
You will need a bird bath in the flight section as they spend a lot of time bathing even in the snow!
I have kept my lorikeets this way for a long time without any problem I hope this is useful information for anyone interested in lorikeets and I'm interested in learning any tips from other lorikeet keepers out there.