One of the most fascinating of bird events happens, like clockwork, every year around Australia’s beaches and inlets.
The migration of waders or shore-birds.
Port Philip Bay becomes a haven for them over our summer as they fatten up for the long haul to Siberia. 9,000-10,000 kilometres. One way!
The western side of Port Philip Bay is also home to the Western Treatment Plant, and for over a 100 years the plant has been discharging nutriment rich water into the bay. The long shallow mudflats and sandbars make it easy for feeding as the water in some places at a Spring tide may recede over 200metres. It is not usual to see the entire mudflats shimmering with little grey feathers soaking up as much as they can eat.
Sharptailed Sandpipers are the largest group, also Red-necked Stints and Curlew Sandpipers. The Curlews are in decline as the flyway feeding grounds have been claimed for other uses by humans and the birds find it hard to locate sufficient food sources.
It was once said among the birding population I knew, “If there is a wader on the shore and you call, Sharp-tailed Sandpiper, you have a 78% chance of being right as about 78% of the waders are Sharpies.
A tiny Red-necked Stint arrives in October/November after its flight in from Siberia, it may weigh as much as 20gm—a small handful of jelly beans. By end of season and ready to return they may be around—40gm Still not a big handful of jelly beans.
Their flight north is well known and a majority leave from the Broome area, zip over to the Philipines, a major stop over at the Paranaguá Estuary Complex, then to China, over the mountains and on to Siberia.
They mate, raise young and the adults leave around 2 weeks before the young for the return journey.
The young follow on, with no GPS, no Map, No Google Map, no Whereis or any of the other “must have app” applications. They simply follow the parents journey.
I came across some time back a great descripition of the migration of Swallows by a noted 1880s preacher. Sprugeon. There is something quite lyrical and lucid about his explanation. I hope you enjoy it.
But these birds know when to come or go; they tell, by some mysterious means, exactly when to start on their long flight. They were never known to go too soon: they are never known to stay too late. The bulk of them depart at one period, and the rest a few days later. If we are living in the suburbs, we bear a twittering congregation gathering around the gables of the houses; and, in the evening, we miss the swift-winged hawkers who had, during the summer, found their evening meal among the dancing insects. Their shrill, joyous twitterings are hushed, for they have perceived that the heavy dews of autumn, and the long nights of winter, are coming to strew the earth with fading flowers and bailing leaves; and, by-and-by, with frost and snow; and, therefore, they have flown off to fairer lands where other summers await them. They will come back again in due time, true as the calendar. Whether we look for them, or not, they will be punctual to nature’s appointment. As sure as the summer’s sun will be their return. They know, without any special instruction, when to come, and when to go.
Charles Spurgeon
We were at the WTP and the Sandpipers were putting on quite the show of murmuration. Big bold patches of black swept across the sky, constantly changing shape and pattern and each bird familiar with its flight path.
After some minutes the game was over and they flew in and landed in the pondage in front of us.
This frame is about 1/10th of the number of birds. How they can fly in such tight formation is beyond thought. You might spot some Red-necked or Curlews in there as well.
Little birds, that with great determination and trust, set out on long journeys into the unkown, guided by instincts we can only guess at.
Truly Amazing
