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Re: Ring-billed Gull numbers at Falls Lake, NC



When was Jordan Lake opened?

-- Helmut C Mueller

409 Moonridge Road
Chapel Hill, NC 27516
Phone: 919-942-4937

Permanent email address: hmueller@email.unc.edu


> From: Mike Schultz <ross.gull@verizon.net>
> Date: Sat, 10 May 2003 17:05:11 -0400
> To: carolinabirds@duke.edu
> Subject: Ring-billed Gull numbers at Falls Lake, NC
> 
> C-birders:
> 
> Ring-billed Gulls first appeared on a Durham (NC) Spring Count in 1983 when
> 100 birds were reported from the newly filled Falls Lake
> Reservoir.  Through 1999 these birds were consistently reported in triple
> digit numbers, with peaks of 610 in 1988, and 475 in 1996.  Since 2000
> however, their numbers have been 13, 7, 52, and 25 respectively on Durham
> Spring Counts.
> 
> I suppose these birds may be leaving our area for breeding grounds else
> ware,  but why did they suddenly start doing this in 2000, and not in the
> previous 17 years?
> 
> Does anyone have any theories as to what is going on here?
> 
> Mike Schultz,
> Durham, NC
>