Friday 17 April 2015

A Common Shrew

I spent the morning following up on David K’s report of the mining bees and also the possibility of Dotted Bee-flies (Bombylius discolor) being on site. There was a lot of mining bee activity, especially on south-facing bare earth, but all the Bee-flies I saw were the common variety, Large Bee-flies (Bombylius major).

The best way to ID the mining bees is probably by netting them and then potting them up. I have no experience of doing that (or the equipment) so my strategy is to photograph them....which is a darn sight easier said than done! In the meantime, I also got slightly distracted by a freshly dead Common Shrew (Sorex araneus), lying on the path. There wasn't any sign of injury but, like the Common Toads from earlier in the month, the main defence mechanism of this little mammal is to secrete a foul tasting liquid from glands in the skin. Predators can quickly abandon them without tucking in.

Unless you have a license to trap and handle live mammals, it's rare you get to see these creatures up close. I wouldn't wish it dead but, since it was, I took the opportunity to check out and photograph its main features.

Common Shrew (Sorex araneus). Body = 70mm long (against my little finger), tail = 45mm (0.5 x length of body)

Pointed nose, small eyes and ears

Alternative view of the long, pointed nose & tiny eyes

Red-tipped teeth

Back feet (from above)

Back feet (from below)

Back foot (from the side)

Front feet
5 Facts About Common Shrews (Sorex araneus)
  1. They rarely live beyond 12 months
  2. They feed on insects but also eat earthworms and small slugs and snails
  3. They don't hibernate but during the winter they actually shrink to make survival easier
  4. Their main predators are Tawny Owls, Barn Owls and larger mammals
  5. During breeding, if the nest is disturbed or the mother wants to train the young, they form a "caravan". Each shrew grasps the base of the tail (or rump) of the one in front of it, forming a caravan of little shrews all running along behind the mother!
The Mammal Society have a great leaflet on Common Shrews HERE, if you'd like to know more.

As for the mining bees, there was plenty of activity but I'll need to sort out IDs etc before posting. No sign yet of the Common Whitethroats but a Willow Warbler was singing (as had been reported by David earlier in the week).

Thursday 16 April 2015

Solitary Bees

Keep your eyes peeled for little mining bees at the Brickworks. David K sent the following message:

At further Roughdown I was so pleased to see the little chalk 'volcanos' of the mining bees. But, if that wasn't enough, I went to the Brickworks and every open soil area where the dells are was alive with an array of mining bees and wasps. Goodness only knows how anyone identifies them but the best bit was when I walked through what is usually a deeply muddied path to what I can only describe as what is the equivalent of a bit of unimproved chalk grassland near the woods. I looked beneath my feet and what used to be thick yellow mud was like a mini Alps of mining bee mounds. Hundreds of them! I felt so guilty because I trod on a few before I realised but, of course, the egg has been laid already - well beneath the surface with a supply of pollen to help the new larva to survive.

A female Tawny Mining Bee (Andrena fulva), photographed on the road outside the Brickworks, 11/4/2015 

Saturday 11 April 2015

Singing Warblers

A sunny afternoon visit to the Brickworks. I counted at least 9 singing male Chiffchaffs & 2 singing male Blackcaps around the complex. Overhead, 1 Common Buzzard & 1 Red Kite. Numerous Small Tortoiseshell butterflies (Aglais urticae) on the wing, a number of Bee Flies (Bombylius major) and other bee species nectaring on the nearly flowering Cowslips and Forget-me-nots. Ash buds are also bursting into life…