Feeding Frenzy

Cow parsley at chest height greeted us by the Lower Vicar's Hill entrance on 25 May when Sue and I carried out the monthly bird survey. We were also greeted by the song of the Chaffinch, the Wren and the Great Tit - the latter for once actually sounding like 'teacher, teacher' as Bill Oddie has described it. It is unusual to hear a Chaffinch in that location, but in fact we heard it singing almost everywhere we  went in the park. Either it followed us around or the bird has multiplied. Usually we see only one or two - if that.

Female Chaffinch in the Shade Garden

What became evident as our survey progressed is that the breeding season has become the feeding season. Great Tits, Blue Tits and House Sparrows in particular have chicks to feed and there was much frantic foraging activity by the parent birds. Every year, we have seen how bedraggled Tits become by the end of June, exhausted by the constant to and fro-ing from nest to food source and back again. In fact, there is evidence that Tits time their breeding to coincide with the maximum availability of caterpillars as these are the best and most popular foodstuff for the young. I watched a Blue Tit nest elsewhere last week and estimated that the parents were bringing food 40 times per hour over a 16 hour day. (See here for a charming children's story which describes the cycle). Normally they have only brood per year which is not surprising.

Blue Tit with caterpillar (Credit:Steve Larkins)

Of course, one big risk at this time of year is that the chicks may become food themselves. We saw a graphic example of this in the upper part of Eastern Road when Sue observed a Jay with a fledgling Great Tit in its beak. Before it could get very far, a Magpie descended and, as the bigger bird, snatched the fledgling from the Jay and began to peck at it in the road before flying off with it. In the background, the parent birds were making an almighty noise though rather helplessly. Alas, most Corvids will eat eggs and snatch birds at the nestling or fledging stage, as will Great Spotted Woodpeckers. Sometimes, it's a bird eat bird world.

In the shade garden next to the bowling green, a pair of House Sparrows were repeatedly diving into the cow parsley, then flying off presumably with seeds for their young. And a fledgling Great Tit perched on the branch of a tree was shaking its wings in a begging display while the parents brought it morsels of food. Fledglings will often leave the nest a day or two before they're ready to fly.

Great Tit wing-shake begging display (Credit|: Rémi Bigonneau)

In all, we saw or heard a respectable 18 species during this survey (see below). It  will be interesting to see if the Starlings are still there in June as they and their young tend to disappear in the summer months. The number of Wrens is an estimate as they are difficult to see, particularly when foliage is in full bloom. But they were singing loudly and as they stay in their territories, a reasonably accurate count can be made. Surprisingly, we neither saw nor heard our two resident warblers - the Blackcap and Chiffchaff - but I suspect they're still lurking.

A Dead Duck and An Owl

You know it's a quiet morning when three birders - myself, Sue and Tony - end up staring through our binoculars at a Wood Pigeon sitting in a tree. Later on, we saw a flock of 26 "Woodies" on the East Field, although they were soon frightened off by a Glendale man hoovering up litter. Other than that our monthly survey on 28 September was very nearly a dead duck- as they say. The oppressively gloomy weather had a lot to do with it, I'm sure. Birds that we have little difficulty in seeing on a normal day like Great Tits, Robins and Goldfinches could not be tempted out of their cover and were heard rather than seen. We did get a good view of three Blue Tits at the top of a tree in the Vicars Hill border, though one had flown by the time I got my camera out.

Blue Tits in the Vicars Hill border

We heard a single Wren in the wood, caught a brief glimpse of a blackbird in the Veda Road garden border, saw a Mistle Thrush fly across the lower field into the tree canopy and two House Sparrows at the top end of Vicars Hill. But only those old familiars - the Crows and Magpies - were out and about as usual. At least by the end of next month, the gulls should have arrived for the winter. And the Robins which are ticking and clicking just about everywhere at the moment as they establish territorial rights should be showing themselves more clearly. And of course the trees will be shedding their leaves...

Magpie on the East Field

There has been one piece of good news during September - a Tawny Owl has been heard hooting after dark by residents along the Cliffview Road border. Tawnies are not uncommon in the parks and wooded areas of London, though this is a "first" on Hilly Fields during the time that we've been recording. When the London Wildlife Trust carried out a survey in 1985, over 400 records of Tawny Owls were submitted covering every borough except the City of London. Interestingly, the LWT has just completed another "owl prowl" survey and it will be interesting to see how it compares and whether numbers have fallen like those of many other bird species. If you hear an owl hooting on Hilly Fields, please let us know via the comments box.

Tawny Owl [stock photo]

Leap Day Survey

Our February survey took place on a leap day (29th) though I'm sure to the birds it was just another morning and a mild one at that. A total of 22 species were seen or heard which is a good tally and includes a Dunnock heard singing in the trees bordering the south-east field, a fine pair of Mistle Thrushes in the wood and, for the first time this winter, a Redwing in the trees on Eastern Road. Yes - just one. For some reason, Redwings have given Hilly Fields a miss this year despite being seen in such nearby places as Brockley Cemetery, Brookmill Park, Ladywell Fields and Greenwich Park (450+ recorded there on 10 February).

What we do get on Hilly Fields are Common Gulls which are not always found in other local gull hotspots. Close examination of the flock on the north field around the cricket pitch revealed 10 Common and 28 Black-headed Gulls - a few of the latter actually sporting the "black head" (strictly speaking, dark brown) which develops in the spring and summer.

There were fewer Starlings than on Big Birdwatch day (30 compared to 80 then) and fewer Goldfinches (4 compared to the usual 16+). However, a healthy number of Chaffinches were around and a trio of Greenfinches were sitting in the Eastern Rd trees which they often frequent. Above the path that borders the east field, a Magpie was diligently building a new nest - a reminder that the main breeding season is almost upon us.

On the birds of prey front, Sue spotted a male Kestrel on 7 February perched on a ledge on the western side of Prendergast School, while Lawrence reports the following: "Today 23rd Feb 2012 we saw a pair of Sparrowhawks perch in a sycamore tree at the end of our garden between Wickham Rd and Breakspears, they sat apart for a while until a Jay attacked one and this revealed the other in the tree behind as they went for the Jay, didn't get it. Fantastic!" The Sparrowhawks may well be part of the family that nested in Brockley Cemetery last year. It's good to know that they're still around, though perhaps not so good for other birds!

Male kestrel

Sparrowhawk