The early bird gets the worm, the old saying goes. That’s even truer today due to climate change, as many birds return to Ontario too late to catch their favourite meals.
While trees leaf out and insects emerge in response to temperature, birds start their migration from down south mainly in response to the length of the day. Although climate change means spring temperatures tend to arrive earlier, the days don’t get longer any faster.
This creates a mismatch between when insects or other food sources are most available and when the birds are around to eat them.
“That balance of when insects are available for birds and for
