Rufous hummingbird pollinating a flower

A recent publication by researchers at Environment and Climate Change Canada used BBS data to conclude that hummingbirds in North America are experiencing population changes that vary by species. For example, the migratory rufous hummingbird (Selasphorus rufus) and broad-tailed hummingbird (Selasphorus platycercus) have declined since the BBS began, with sharper decline in recent years.