Leybourne late on a sunny afternoon

The light seemed to make a real difference to the birds, and there seemed to be a lot of waterbirds and passerines around. Several parties of Tits, usually mixed Blue Tits, Great Tits and Long-tailed Tits.

Many Black-headed Gulls, five Common Gulls, Larus canus, several Greylag Geeses, one Canada Goose, Great Crested Grebes, Cormorants, Coots, Moorhens.

Raptors on Sheppey

A truly great day on the Island, with leader Tony spotting amazing birds with utterly impressive regularity. Merlin, Sparrowhawk (which I missed), Common Buzzard, Marsh Harrier, Peregrine, Kestrel were the target raptor species seen. Black-headed Gull, Herring Gull, Great Black-backed Gull, Curlew, Golden Plover, Lapwing, Dunlin, Carrion Crow, Magpie, a lovely Stonechat pair, a very nice Pipit, Corn Bunting, Linnet, FieldFare, Starling, Brent Geese, Greylag Goose, White-fronted Goose, Mallard, Little Egret. Bearded Reedling, Siskin and Kingfisher were heard apparently.

Continental Pear Rust in Hadlow

Here are some long shots high up in the foliage of a Pear Tree in Great Elms, Hadlow, I am sure I can see some galls caused by Pear Rust, with the strange outgrowths on the underside of the leaves.

and here is a closer crop of the gall on the right.

and here is a different picture.

Hartlake Bridge

I think it is now down to a tree by tree approach as far as identifying Willows goes! I will have to go back to individual trees time and time again over the year to check the seasonal features.

Here is a close-up of the bud on a yellow-shooted form of Crack Willow, tentatively identified as Salix x fragilis nothovar Basfordiana f. Basfordiana (scaling ex Salter) Stace also known as the Basford Willow, first discovered before 1870 in the nursery of Mr. William Scaling. The ID depends the assumption that this is the only yellow-shooted form of the Hybrid Crack Willow, produced it is thought by the original cross of the Hybrid Crack Willow, Salix x fragilis, with the highly colourede vitellina form of the White Willow, Salix alba, but of course this could prove false! However, it seems to be as close as most people will get, unless they are absolute experts, so it will have to do for me.

it is interesting to see the lenticels, the stipule scars, and the hairs on the stem close to the bud - protected from wind and abrasion?

Holborough focussing on Viburnum

On the Viburnam lantana (no plants of V. opulus were seen) a few galls of Eriophyes viburni, one of the classic Eriophyid mites, were seen. One plant in particular was conspicuously rich in the galls, with most, by contrast, being entirely free.

This one plant had just two galls on, but on two different leaves.

Alders and mines at Barden Lake, Haysden Country Park

I had a lovely late afternoon walk with Monty around Barden Lake today, concentrating on the Alders and anything I could find on them.

I think this is Fenusa dohrnii (Tischbein, 1846), a Hymenopteran sawfly miner, which is said to be very common. Taken with flash, the mine looked much browner to the eye alone, as in the descriptions. Very interesting to see that [apparently] the mine is constrained at first by the major veins as it moves out away from near the midrib, breaching them in the outer third of its progress - exactly as it reports on the UKflymines site.

This larva could be the third generation of 2015. Although this was apparently just a single mine, it could not have been Heterarthus vagans, the other main sawfly miner of Alder, because the larva did not have the diagnostic dark prothoracic plates. It may have only been a single mine because it was a young partly formed leaf, only 5 cm long,  - perhaps unlikely to have sustained the insect through to its sawfly adulthood. The first picture is from a jpg version of the shot, the second from the equivalent raw version. If anything the jpg is the better I feel.

This is the dorsal view - note again the absence of a distinctive prothoracic plate. The jpg only this time.

Alders at Leybourne

I had another look at the Alder trees this Saturday and Sunday, looking at where the trees were on Saturday and trying to be sure of the ID features, and doing rather more on leafminers and other insects on the Sunday!

Italian Alder, Alnus cordata, is present as 3 - 4 trees on the short straight Eastern boundary, and another couple of trees on the southern edge near the houses, and another actually in the hedgeline. Rarely self-sown according to Pfaf, so perhaps planted, and (just to note) the seed requires 6 week stratification.

The leaf edges are heavily damaged by typical weevil feeding notches, of an unknown species. There was a Longhorn Caddis on one of the leaves, Mystacides longicornis, identified by Chris Brooks, after I failed to see it wasn't a moth, and posted it on i-spot! Also on the leaf can be seen the white specks of what appear to be leafhopper feeding marks, as well as what look like salt secretions.

A little further on there was a large mine which looked rather like Agromyzus alnivora, which does occur on this species. It gradually increases in width, and I think I could be persuaded that it had contained, at least at some stage, a double line of frass! So, it should be a Dipteran mine, and the only Dipteran known on Italian Alder is indeed Agromyza alnivora!

Grey Alder, Alnus incana, (L.) Moench

A few large trees on the south and east sides, with young trees underneath them. The young trees under the canopy of the older ones could well be root suckers!

Going back on the Sunday I noticed another Grey Alder, planted in the first formal hedgeline. I have walked past it a dozen times without even noticing it! A fine young tree, possibly a cultivar of the species. On the side-shoot I took for confirmation there was a whitish Phyllonorycter-type mine, similar in all respects, except in lacking a brownish colour, to Phyllonorycter strigulatella, the Grey Alder midget. That is a rare leaf-mining moth, distinctly local, and perhaps still nationally  notable. although I found it difficult to assign this one mine to any other species, perhaps it is safer to leave the ID as simply Phyllonorycter sp.

The mine was about 12 mm in length on a young still-expanding leaf, only 40 mm long.

On Sunday I think I finally concluded, from the leaf shape and shoot characteristics, that the Alder by the small pond was actually the hybrid Alnus x hybrida.

This is a possible mite gall on the hybrid Alder leaf, maybe Acalitus brevitarsus, but still to be confirmed by examining the erineum and its hairs under the microscope.

There was something feeding on this Powdery Mildew on the hybrid. Could have been a very wide range of things.