I spent most of the day scoping Gravesend Bay from 3 different vantage points. 
Highlights included:

1 Tropicbird sp.
1 Cory's Shearwater
2 Wilson's Storm Petrel
3 Leach's Storm Petrel
1 Red Phalarope
6 Parasitic Jaeger
2 Royal Tern

Full list here:

http://ebird.org/ebird/view/checklist?subID=S11905104


At around 10:00 a.m. I spotted a brilliant white bird about half the size of 
the adult Gannets it was among just south of the mid-span of the Verrazanno.  
Unfortunately we were at the end of Bay Parkway at that point putting us a good 
1.5 miles away but I was able to follow the bird for about 2 minutes in which 
time I was not able to discern any dark markings either above or below on the 
bird and no black wingtips (in case it was a runt Gannet).

 The shape struck me right away as tropic-bird-like with an attenuated rear 
though I could not make out tail streamers at that distance. The bird 
hover/kited into the wind and then dove toward the water and then swooping back 
up to hover again. It was facing into the wind when hovering and only 
flapped intermittently. It repeated this 3x cutting across east across the bay 
toward the Belt Parkway. On the third swoop down I lost it and was not able to 
relocate. Another band of rain moved in right at that point and viewing 
conditions quickly deteriorated.

Given the size of the bird and the very white plumage I would think Red-billed 
might actually be more likely than White-tailed but honestly given the distant 
I was going mostly on GIS and the distinctive bright white plumage. Those who 
know me know that I tend to second guess myself a lot and the fact that only 
Rob Jett and I actually ever got on the bird and then we were not able to find 
it again gives me pause and I can't say I am 100% ceratain about the i.d. but 
wanted to put it out there anyway.

Regards,
Shane Blodgett
Brooklyn NY
Brooklyn NY
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