The Warbler travels 1700 miles over the ocean.
It is the part of their winter migration to South America.
Scientists suspected that the bird travels to Caribbean but there was no particular study made and finally in summer 2013 they have attached a tracking device to the birds by this they have to come to know about their journey.
The study is published in Journal Biology Letters.
One of the author, Chris Rimmer of the Vermont Center for Ecostudies, said, “It is such a spectacular, astounding feat that this half-an-ounce bird can make what is obviously a perilous, highly risky journey over the open ocean, now maybe that will help us focus attention on what could be driving these declines.”
Knownig how the birds migrate will help scientist to study the implications of climate change, said Andrew Farnsworth who is research associate at the Cornell Lab of Ornithology, he specializes in migration biology and he was not a part of this study.
He said, “What happens if birds aren’t able to fuel sufficiently to make this kind of flight because of habitat fragmentation and habitat loss in New England or the Canadian Maritimes?” Farnsworth said. “How much energy do they need and if they don’t get it, what happens?”
Number of birds travel long distance over ocean but the case with this bird is different as it lives in forest and other birds that live in forest fly across Central America and Mexico.