Last chance...

 Just posted about Sunflowers growing larger heads (= more seeds) toward the end of the season, probably to ensure a good crop next year.  Here's a very stressed young birch tree by my driveway that seems to be doing the same thing.

 Very dense clusters of catkins.  In fact far more than are on the more mature birches in my yard. This young tree is bent over, maybe due to soil problem or maybe even bent low from last winter's snow.  I'm guessing the larger number of reproductive parts is a response to stress.