Help the bluebirds in your nest boxes build parasite-free nests by placing a Songbird Essentials Bluebird Nest Lift inside the shelter. Blowflies often lay their eggs in nests inside bird homes, and the larvae feed on the nestlings to gain strength. This package contains 4 durable, mesh screens, which each rest in the bottom of your existing nest boxes, creating elevated platforms to accommodate nesting material. This keeps the eggs and nestlings off of the base of each home, so they remain dry and safe from blowfly larvae and other parasites. Not only do these screens keep the birds safe; they also create a gap between the floor and the nest for you to easily remove any parasites you may see. The plastic coated, metal construction will remain durable for seasons of service, and the convenient size of each fits inside many bluebird, woodpecker, or other bird houses. Keep young bluebirds safe from parasites with these Bluebird Nest Lifts.

Note: This case pack includes 4 of the Songbird Essentials Bluebird Nest Lifts. Some adjustment of the lifts may be required for a proper fit in your bird houses.

Dimensions: 4"L x 4.375"W x 1"H each
Mounting: place inside existing bird house
Construction: metal