This amazing photograph was recently taken at Leslie Street Spit (Tommy Thompson Park). It shows migrating whimbrels flying overhead in the mist, on their way, no doubt, towards Sam Smith and, later, James Bay. Note the radio transmitter on the bird at bottom centre. (Double click on photograph for better view)
It is hard to believe that it does not impede flying. For more information on the tracking program , click here. To follow the 28 000 km journey of a whimbrel named Hope, click here. See previous FOSS blog post also.