Post by matt on Apr 11, 2022 21:46:44 GMT
Not sure - it is a very insulated concrete made with perlite as the aggregate, so shouldn't be too bad. My theory has always been that they base timings on food source availability, and around my garden they mainly seem to feed in the nearby oak trees which are later into leaf than some other trees. All speculation, of course, but the actual timing is pretty much the same as previous years (mid April) with the only weird thing this year being that she started so early (mid March!). We will see!