More on Pink Ring-billled Gulls at Oshawa Harbour

Here's a beauty at Oshawa Harbour on 3 February 2017. I still wonder what these individuals are eating that is causing the pink flush on these and not all Ring-billed Gulls, or is it just their hormones.

The pink flush compared to regular Ring-billed Gulls. There were only two noticeable ones among about 200 Ring-billed Gulls ar Oshawa on 3 February.

More information

On 6 February at Ashbridges Bay amongst 500 plus Ring-billed Gulls were only two individuals with pink flush. Link to Gray Carlin's eBird Checklist where she has a photo of the bright one. http://ebird.org/ebird/view/checklist/S34218989

Link to more information about pink flush on Ring-billed Gulls in 2016: http://www.jeaniron.ca/Gulls/2016/rbgullpink.htm

Link to Ring-billed Gulls with pink flush at Oshawa on 1 February 2017: http://www.jeaniron.ca/Gulls/2017/rbgupink.htm