Another bivalve victim (moderated)

To: 'Ian May' <>, "" <>
Subject: Another bivalve victim (moderated)
From: Peter Shute <>
Date: Tue, 26 Feb 2013 12:01:02 +1100
During a previous discussion about banding in August 2011, this same quesion 
about the lack of old flags was raised, and I asked if someone could explain 
it. I received this reply:
"Darvic the plastic used for flags has a long life span and is not meant to 
fade but in reality it does over time but we are talking 10 plus years in most 
cases. There was also a batch of yellow that was slightly paler than what we 
were using in the past but that again was quite a few years ago."

It doesn't explain the drop in Sanderling numbers discussed, but it does 
explain why few have flags that look old.

Peter Shute

> -----Original Message-----
> From:  
>  On Behalf Of Ian May
> Sent: Tuesday, 26 February 2013 11:22 AM
> To: 
> Subject: Re: [Birding-Aus] Another bivalve victim (moderated)
> For many years from the mid 1960's Sanderling could be 
> observed in SE South Australia sometimes in flocks more than 
> 700.  Suddenly flagging started and it was not unusual to see 
> dozens or more; flagged birds trailing the main flock 
> struggling to run up and down the beach following the waves.  
> Where the local population remained constant for at least 20 
> years while dodging domestic dogs and 4WDs and beach 
> fisherman, within a few years of the first flagging 
> exercises, the local population crashed to below 400 and is 
> still diminishing  The alarming fact is that we rarely see 
> any Sanderling in the area with old flags 
> returning.   Where are they?

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