Swallow-tailed Moth. With15 more times large Moths than Butterflies in the UK, and hundreds of Micro Moths, we pay much less attention to Moths. Here is a very common one in gardens up and down the UK. Four came to the light of my ‘Heath Robinson’ home made moth trap this week, but you could also attract them with a white sheet lit by a bright light. They fly mostly from late June to early August so this is a good time. They just settled near the lamp, by about 10.30. At 2 inches across they are easy to see and identify. The caterpillars eat common leaves like Hawthorn, Sloe and Honeysuckle but their favourite is Ivy. Conditions: Sunny intervals. Temperature:Max 21- Min 13c.