The declining Hoary Puffleg population if currently listed as “near threatened,” due to extensive deforestation in its small range. It requires cloud forests and forest borders in the lower highlands, and sometimes inhabits second growth. Hoary Pufflegs are territorial and are frequently seen by themselves feeding in dense parts of the understory, especially near streams. When in second growth, they stay in low bushes and shrubs. While similar in appearance to the Greenish Puffleg (Haplophaedia aureliae), the Hoary Puffleg is grayish below and has more extensive scaling. Hoary Pufflegs are also usually found at lower elevations than are Greenish Pufflegs.