My guess is that it's because we are enjoying fabulous Summer weather. Hot clear days interspersed with one or two warm showery days. Our gardens are blooming and lush. It's really quite lovely.
In my garden the Swanplants (milkweed) are growing well. They are tall, green and healthy. Right now they are plentifully covered in flowers and swans (the seed pod of the plant).
I'm hearing that those raising Monarchs around the country, are also having a bumper summer of Monarch hatchlings.
My own citizen science participation is moderate and is indeed a success.
Here are some photos of today's lovely male who emerged from his chrysalis and flew off to his butterfly life.