That time of the year again

For the third spring thaw in a row, a small section of our backyard seems to be the final resting place for a number of small birds.  Just yesterday, my first inspection of the year, I was able to find two birds.

If the trend continues like years past, I'll continue to find these guys every few days for the next few weeks and then the trend will mysteriously stop.

Though I haven't done all of that much work to find out what might be happening, I have spoken with my co-workers (all longer term residents of Regina than Jeannette and I) and none of them have ever experienced anything quite like this in their own backyards.