Walton Hall Nature Trail, what's on April

Spring has finally arrived - just. The daffodils are now out, birds are singing for all they are worth and frogspawn has arrived in local ponds.
Lichens Keep on the lookout for Usnea lichens as they could be an important biological indicator of air quality in Milton Keynes. The lichens look like small grey/green balls of cotton wool and grow mainly on willow and poplar bark in this part of the country. I would be interested to know exactly where you find them as we would like to set up a long-term measuring program recording the same individuals every year.

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