How to Build Finch Nests
Finches do not make nests for shelter; their natural behaviour is to live in shrubbery and trees. The only reason finches build or adopt a nest is when they are in the mood to make little finches. They mate and lay eggs in the spring and fall seasons. Some finches mate during both these seasons; most nest once a year. In the wild finches seek out grasses and small, lightweight nest-building materials like feathers, plant material and bark. However if you have bought finches for sale and want to raise them, you can make your own ready-made nests for them or for wild finches. Enthusiasts can set out ready-made nests for wild finches to use, equip cages and aviaries with nests or provide their birds with the species' preferred natural building materials and let them make their own nests.
Gather together nest-building materials. Finches prefer nests made from natural materials. Fresh or dried grasses, shredded tissue paper and soft feathers all make good nesting material.
Take a ready-made finch nest and layer it with the materials you have chosen, ending with a soft layer of feathers. Prefabricated nests can be plastic square-shaped, square wooden nests or cup-like, made from wicker or even bamboo. Place your finch nest in the crook of a tree, among the leaves of a shrub or bush, in the upper corner of a cage (allow at least 20 inches of space in a cage for your finch to exercise) or attach it the upper walls of your aviary.
Clean the nest out when your wild finches move on or when your pet finch chicks develop their adult plumage. Throw away the dirty nesting materials and wash out the interiors with a mild soap and hot water. Wooden and plastic nests should withstand several seasons of nestlings. Even the light-weight bamboo or wicker nests can be re-used if they are thoroughly cleaned.