Posted: 03/09/2013 at 13:57
The lack of different species for a start. My garden is full of various whites, a few peacocks and commas. I've seen maybe 3 common blues, one painted lady, a few tortoiseshells and no red admirals. This is not what I was seeing a few years ago when the garden was alive with all species.
Earlier on there were a few meadow browns, one gatekeeper and a few ringlets. The only butterfly I've seen more of this year is the speckled wood.