Biggest change was hearing a Chiffchaff singing from the South Island and a pair of Gadwall. (Last years pair, who knows!!). The new resident Swans were courting with the cob offering weed to the pen. However the "old" pen was still present with her two offspring from last year, which I found a bit surprising. If and when the new pen starts nesting, I'm guessing the cob will be less tolerant and see off the old pen and the juveniles. All around the Lagoon were Robins singing with at least 10 males in good voice.
The drake Gadwall
The new Cob
One of the two juvenile Mute Swans from last year.
One of many male Robins around the Lagoon in good voice.
50+ Herring Gulls and Lesser Black-backed Gulls of all ages.
2nd summer Common Gull
Other birds of interest were a single Jay in the woods to the north of the Lagoon and a Great Crested Grebe. Though I didn't see a second Grebe, I'm assuming she was on the nest, that she built last year just above the South Island. However this year it is considerably higher, by at least 9" and it was difficult to see into it.
The only invertebrate I came across were a few midges sp. and the remains of a snail sp. which had been abandoned by a Song Thrush. Also about quite a few Coltsfoot (tussilago farfara) in flower and two species of Daffodil.
A few pieces of shell broken lay on top of a Song Thrushes anvil.
Unfortunately the Song Thrush must have been disturbed as having got to the meat was unable to eat it. He might come back!
Coltsfoot
Daffodils
A Pike of around 5lb (often called Jack Pike up to this size)
The undergrowth and branches all cut back for the residents to view the Lagoon from their homes.
Birds Recorded: 1 Great Crested Grebe, 5 Mute Swan (3 adults and 2 juveniles), Canada Geese, Mallard, a pair of Gadwall, 4 Tufted Duck (2 pairs), Moorhen, Coot, 100+ Black-headed Gull, 50 Herring Gull, 8 Lesser Black-backed Gulls, 1 Common Gull, Wood Pigeon, Dunnock, 10+ Robin, Blackbird, 1 Chiffchaff singing, Great Tit, Blue Tit, Wren, 1 Jay, 2 Magpie, Carrion Crow, 10 House Sparrow.
Also
A Pike and Swan Mussels.