
In most years dragonfly season begins around the Victoria Day weekend (which always falls on the third Monday of May). I remember visiting Mud Lake on the long weekend in years past and seeing up to a hundred freshly emerged dragonflies perching in the trees there. However, in the last few years it seems that dragonfly season has started later than normal – the long-lingering cooler spring weather has played a large part in this, as emergence depends chiefly on the temperature of the water the dragonfly nymphs are living in. By the second weekend of May I’d go out eagerly hoping to see the first dragonflies of the year, and by the end of May I’d still be looking for them. Even when I eventually found some, such as last year, numbers would be low, and it would take time for the season to get back on track. Numbers remained low in Ottawa all summer last year for some reason, though we think that the unprecedented spring flooding might have been the cause, either washing away the small nymphs or dumping unhealthy amounts of debris, sediment, and chemical-laden runoff in areas where they breed.
Continue reading “The Baskettails of Spring”


