Silver Gulls behaving oddly
This afternoon while watching the cricket on television my wife called to me from the garden. A flock of about 20 birds were circling in the air above our five acre property here in Murray Bridge, South Australia. I quickly grabbed my binoculars and headed outside.
For the next ten minutes or so the loose flock of Silver Gulls soared on the breeze over head, circling around many times. They kept this up mostly silently with just an occasional soft contact call – nothing like their normal raucous, far reaching cry which is a quite familiar call. The whole time they stayed overhead near the shed, circling constantly over about a fifty metre radius. I am quite puzzled as to what they were up to. Perhaps they were feeding on flying insects but I couldn’t see exactly what they were doing, despite being able to observe individuals as they flew. Strange.
Silver Gulls are widespread throughout Australia and are very common along the entire coastline, along river courses, around lakes, dams, reservoirs, swamps and any suitable habitat and are usually associated with water, but not always. We are about five kilometres from the River Murray but we have some fly over our property every month of so, sometimes in large flocks of 50 to 100, usually quite high in the sky. This is the first time I can recall them coming so close to the ground; the flock stayed about 5-10 metres above the ground at all times.