Smart birdhouse review: Birdfy Nest Duo captures full nesting season

WIRED has published a detailed review of the Birdfy Nest Duo, a smart birdhouse designed to transform backyard bird-watching into a comprehensive nature documentary. The device features dual 1080p cameras, one positioned outside the entry hole and another inside the nest, alongside built-in hygrometer and thermometer sensors. These internal climate sensors provide real-time data on temperature and humidity through the company’s application, offering insights that traditional nest boxes cannot provide.

The reviewer, a long-time bird-watcher based on the West Coast, monitored a family of black-capped chickadees throughout the entire nesting season. Using the device’s app, they observed every stage of the process, from initial excavation and egg-laying to hatching and fledging. The footage is organised into labelled stages such as “Prelude,” “Nesting,” and “Fledgling,” although the reviewer noted that the artificial intelligence used for labelling was occasionally inaccurate.

Constructed from lightweight bamboo, the 16-inch unit weighs approximately eight pounds and is powered by an included solar panel. It connects via 2.4-GHz Wi-Fi and uses cloud storage, with videos immediately downloadable without a subscription. The box includes four interchangeable entry hole sizes, ranging from 0.9 inches for wrens to 2 inches for starlings, each fitted with metal predator guards. A waterproof remote with a reset button and charging port is also included for maintenance.

During testing, the system demonstrated seamless connectivity, with no dropped connections or Wi-Fi issues reported. The solar panel kept the battery charged indefinitely, maintaining a 98 percent charge level even in late August. However, the reviewer identified a significant drawback during a late May heat wave. The black exterior of the box absorbed heat, causing internal temperatures to rise to about 96 degrees Fahrenheit. To prevent fatal overheating for the fledglings, the reviewer had to manually cool the box using ice packs and an umbrella.

The review concludes that while the Nest Duo is expensive—priced at nearly twice the cost of Birdfy’s single-camera model—it offers a highly recommended experience for nature observation. The device allowed the reviewer to learn specific behaviours, such as chickadees feeding hatchlings spiders for their taurine content and removing fecal sacs to deter predators. For those willing to invest in the technology, the Nest Duo provides an unparalleled view into the private lives of cavity-nesting birds.