TOM SPEARS, OTTAWA CITIZEN
Published on: February 15, 2016 | Last Updated: February 15, 2016 3:33 PM EST
Birders can now watch the looping and weaving migration routes of more than 100 North and South American bird species on an animated map.
The map of 118 species condenses the movements of a whole year into about 30 seconds, with the changing dates shown in one corner. It shows which species stay in their northern nesting grounds for several months, and which visit only for a few short weeks. Each species is identified on a second animated map on the site.
And it shows that on any day in the year, something is migrating somewhere.
Cornell published the work in a major science journal, Proceedings of the Royal Society B.
In the meantime, birder Bruce Di Labio says year-round resident birds such as cardinals, chickadees and house finches are reacting to the longer days and starting to voice their spring calls.
has gained more than an hour and 40 minutes of daylight since winter began. Ottawa
Di Labio says one oddity this winter has been the American robin, which has stayed in
in unusually high numbers this winter. Ottawa
“They stayed through the warm fall and early winter,” he said. “And this year there was a large amount of fruit on the trees, so they’ve been able to find enough food. But as the winter goes on they’re having to move around (to find food), and then people see them and think, hey, the robins have returned.”