Piltanton Burn - 9.xi.23

 Sunny spells, light westerly, low tide 3.09pm

Disturbance was the unwelcome theme of this visit. Upheavals to the beach were immediately obvious when I arrived. Judging by the wide deep tracks, someone had brought heavy machinery to take away a lot of the accumulated heaps of seaweed from the tideline. And in the process, they also uprooted pioneer plants, such as Sea Rocket and Common Orache that were beginning to colonize the sand, and disturbed the naturally stratified deposits beneath, doing untold damage to the whole foreshore ecosystem. While it may be laudable in principle to make use of fertilizer that is not derived from fossil fuels, any net gain is rather undermined if you trash the environment while you do it. To add insult to injury, some narrower tracks suggested that more joy-riding had also happened, although by motorbike this time instead of the 4x4 that is still stranded mid-channel like a metal hippo. Indeed the new tracks passed by that flooded wreck and continued on the far side of creek.

I headed west to check the fully exposed riverine mudflats first. A couple of Linnets flushed from the fringe of the dunes but they proved to be almost the only passerines I encountered along the upper shore, now that the rich source of invertebrate food provided by freshly washed-in seaweed was largely absent. Thirty or so Curlew were feeding on the cattle pasture inland, along with the usual mixed gang of corvids and about twenty Common Gulls. Whether the recently spread slurry is of benefit to them or otherwise I am uncertain. But certain it is that nutrient run-off from muck-spreading into the river and thence to the sea has an impact on marine ecosystems that can be seen from space when algal blooms proliferate and choke the rest of the planktonic food-chain.

I tried to forget about human destructiveness and concentrate on counting ducks and waders. A couple of Snipe were hunkered down at the base of reeds and there were the usual scattering of Redshank, Oystercatchers and more curlew. Of most interest perhaps were a flock of Wigeon, whistling as they preened and dabbled. That is one of my favourite sounds in nature and always takes me back to my formative birding years at Dublin Bay. I was about halfway through estimating their number when a guttural buzzing noise came to my attention. It grew steadily in volume and resolved into a pair of trail-bikes approaching from the south along Luce Sands, heading towards Torrs Warren plantation on the far side of the main creek. No doubt these were the makers of the tracks described earlier. The wigeon heard them too, raising their heads and tensing ready for flight. Some gulls took to the air and I prepared for everything to flush, but luckily the bikers turned away into the trees before getting too close and we could all relax again.

For once there were no dog-walkers about, so I headed downstream then to survey the exposed stony shoals. More wigeon were there, making a site total of 165. A single Grey Plover and about 30 Golden Plover were nice to see, but there was an absence of smaller waders. I did spot a large flock of several hundred wheeling above the distant sandflats, colours changing as they banked towards the setting sun, but too far to identify. Probably Knot or more Golden Plover, perhaps the flock that visits West Freugh where the American Golden Plover was seen recently. With light fading fast, I retreated to the car, gulls beginning to stream overhead from inland to roost on the coast. Hopefully they had an undisturbed night’s rest.

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