Birdie® is a Fresh Air Monitor™ improving your indoor climate & health. 90% of our life is spend indoors. Often in poor air quality increasing the risk of asthma, headache, fatigue, and sleep disorders. Experts suggests that one of the best ways to improve indoor air quality is by ventilating frequently. This is a huge but invisible problem, calling for a visible solution. Just like the canary in the coalmine, Birdie® will drop down when the indoor air quality is poor — until you open your windows and bring it back to life. Simple as that.