27/02/21
Another sunny day, with a definite feeling of spring. Lesser Celandine is starting to flower in warmer spots, and a hoverfly was taking advantage of the available nectar. Lesser Celandine and hoverfly Characteristic pit-chu calls alerted me to a nearby Marsh Tit. A stunning male Bullfinch sang softly in the hedgerow but didn't show well enough for a picture. Marsh Tit A total of five Adders was found, two in DV, two in PV, and one in TF. An estimate of overall population size is a nice objective, though no doubt very difficult to achieve, involving the identification of individual snakes. The best distinguishing feature is the shape of the zig-zag pattern on the upperparts, especially behind the head. Some individuals have a distinctive feature, such as the Adder in the third picture, with an inverted heart-shaped pattern to the rear of the head. However, others can be very similar, so an uphill task to identify individuals from one visit to another. All Adders seen to...