English and Scientific names:

Great Black-backed Gull Larus marinus

Number of individuals: 

1 adult

Locality: LOUISIANA: 

Red River

Specific Locality:

Lock and Dam No. 4 - flying above the Red River near the big pond ~ 0.5 mile in from LA 1

Date(s) when observed:

12 October 2006

Time(s) of day when observed:  

9:10 a.m.

Reporting observer and address:

Jim Ingold

Shreveport, LA

Other observers accompanying reporter who also identified the bird(s):

Charles R. (Dick) Bruer, Huntsville Alabama

Other observers who independently identified the bird(s)

 

Light conditions (position of bird in relation to shade and to direction and amount of light):

Overcast in good light

Optical equipment: 

Fujinon 80 ED scope zoomed to 60x

Distance to bird(s): 

150 yards

Duration of observation:

60 seconds

Habitat: 

open sky over the Red River

Behavior of bird: 

Bird was flying towards the observers high above the river near tree top level - flight was slow but strong

Description:

The bird was observed flying towards us while we were looking at a Roseate Spoonbill sitting in a tree. The bird was HUGE! It looked to be the size of the spoonbill as it came closer to it!

A very large gull; very white underparts dark black wings and upper body. The head was white with a dark looking crecent shaped bar behind the eye; the eye appeared dark.

 

The trailing edge of the wing was white.

Leg and bill color were not seen.

 

The gull book says they "fly ponderously slow, with eagle-like wingbeats>"  In retrospect, that is what I saw, since when the bird first caught my eye I thought it might be a raptor - before the gullness of it's being came through!

Voice:

Not heard

Similar species:

Lesser Black-backed Gull: with the size comparison to the spoonbill the observed bird was too large to be a Lesser Black-backed Gull

Photographs or tape recordings obtained?

None

Previous experience with this species: 

I grew up with this species, in my beginning birdwatching days, along the shores of Lake Erie in NW Pennsylvania

Identification aids:

after observation:

Sibley;

Olsen and Larsson: Gulls of North America, Europe, and Asia
 

This description is written from: 

Memory

Are you positive of your identification? If not, explain: 

 

YES

Reporter: 

Jim Ingold

Date and time: 

12 October 2006