The Surprising Way Birds Are Trying to Dodge Climate Change

New research shows that some birds are moving faster than ever to keep up with shifting climates. Here鈥檚 where they鈥檙e going.

We humans have our ways of聽coping with聽climate change: We'll to keep our homes from slipping away. But what about birds? How are they surviving聽bizarre rain patterns, extreme聽temperatures,聽and freak weather events?

Brooke Bateman has the answer to that. The post-doctorate ecologist from the University of Wisconsin, who聽once聽, wanted to figure out how breeding birds in North America were dealing with the havoc brought on by climate change. 鈥淗ow far and fast is climate change happening . . . that鈥檚 what I needed to know,鈥 she says. With the help of scientists from Wisconsin and Australia, Bateman wove together climate data with location data for 285 North American species,聽and built聽models to show how rainfall, temperature, weather, and other variables聽affected every species鈥 distribution for every month of every breeding season from 1950 to 2011. (鈥淚 made a lot of models,鈥 Bateman says.) Using the models as a reference, she then drew predictions on where the birds are ending up. The final results were published in in December.

What do the models reveal?

There are two major curveballs in this study: First, birds are moving faster than we think, and聽second, they鈥檙e going places where we don鈥檛 suspect. Previous estimates had breeding ranges shifting by , but Bateman鈥檚 work proves that some species are moving at twice that speed, up to as much as 3 miles a year. The quickest drifters include meat eaters, insect eaters, and species that forage high up in the canopy or at the bottom of the forest floor (they鈥檙e probably stalking their prey to new spaces). Birds that are staying put include woodpeckers, hummingbirds, plant eaters, and non-migrants.

The direction of these movements is also unexpected. While the majority of the species are flying northward (as predicted), more than a quarter of them are creeping westward鈥攕pecifically to Wisconsin, Minnesota, Iowa, and South Dakota. The Tufted Titmouse, for example, is expanding into the Midwest and finding its niche in human-dominated landscapes. Hooded Warblers are moving in that direction as well, but they鈥檙e more used to living in the thick forest understory, so adapting to the grasslands and wide-open plains will be a lot more difficult for them.

How does this study fit in with other related research?

In the continued saga of birds and climate change, findings like these can 鈥渉elp to complete the story,鈥 Gary Langham, 探花精选鈥檚 chief scientist, says. While the (released in 2014) predicts how breeding and wintering ranges may shift and shrink over the next century, Bateman鈥檚 models take a deeper look at what鈥檚 causing the birds to relocate right now. And聽the snapshots from the past 60 years show that birds are already moving thanks to global warming. The responses, Langham says, are idiosyncratic: The birds aren鈥檛 just moving northward, and they鈥檙e not all magically adapting to their new surroundings.

The study鈥檚 present-day, species-specific approach is also important because it highlights which birds need the most help. For instance, Bateman鈥檚 models show that the Florida Scrub-Jay鈥檚 thin slice of habitat is being squeezed even more tightly. The 探花精选 Climate Report鈥檚 models point out that there will be聽;聽but the jays probably won鈥檛 be able to find their way out there, Langham says. So rather than leaving species to adjust鈥攐r go extinct鈥攐n their own, humans will have to step in and give them a hand, by slowing down the pace of climate change and preserving critical landscapes.聽

Why is this helpful for conservation?

In Bateman鈥檚 perspective, birds have three options: They can move, stay and adapt, or stay and be wiped out. Knowing which option a species will choose聽can help conservation groups, like the U.S. Fish and Wildlife Service (one of Bateman鈥檚 collaborators), pick out a rescue strategy. 鈥淲e can put our money in places that have multiple species, and build connectivity between where the birds are and where they will be,鈥 Bateman says. Unfortunately, birds and people tend to love the same landscapes: In the study, areas that gained the most species were also hot spots聽for development. Saving these lands through acquisition is crucial, Bateman says.

The study also offers some foresight on which spaces need to be preserved for current and future generations of birds. Survival isn鈥檛 the only thing species have to worry about when moving to a new breeding spot: "The big question is, can they create the next successful generation there?" Langham says. If they can鈥檛, humans might need to step in. 鈥淗eroic efforts [by people] could buy at least 10 more generations of birds,鈥 Langham says, 鈥渁nd that could be the difference in them being around.鈥澛