Smoke from Canadian wildfires is linked to a decrease in bird sightings across New York state, according to researchers from the University at Buffalo [1, 2].
This finding suggests that large-scale wildfire events create environmental conditions that disrupt the detection and behavior of avian populations. As wildfires become more frequent, understanding how smoke affects wildlife monitoring is critical for accurate biodiversity tracking.
The study, released in July 2026, indicates that the presence of smoke alters how birds interact with their environment [2]. Researchers said the smoke reduces bird vocalizations, which are primary indicators used by observers to locate birds in the wild [3].
Additionally, the haze causes birds to remain hidden within forest canopies [3]. This behavior makes them harder to detect for both professional researchers and amateur birdwatchers. The combined effect of reduced sound and limited visibility creates a gap in sighting data during smoke events [1, 3].
While the birds may still be present in their habitats, the atmospheric conditions created by the Canadian fires mask their presence [3]. The University at Buffalo team said these environmental factors can lead to an undercounting of species during periods of heavy smoke [1, 2].
The research highlights the far-reaching impact of wildfires beyond the immediate burn zones. Smoke traveling across borders can influence the ecological data collected thousands of miles from the original fire source [1, 2].
“Smoke reduces bird vocalizations and causes birds to stay hidden in canopies.”
This research indicates that atmospheric pollution from wildfires can create 'observation gaps' in wildlife data. Because smoke suppresses the natural behaviors—such as singing—that researchers use to identify species, current population counts during wildfire seasons may be artificially low, potentially masking the true status of avian health in the region.
