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| | Ring-billed Gull - Wildlife - Presidio of San Francisco |
 | | The Ring-billed Gull dives for fish, catches insects in the air, and also feeds on vegetation, small mammals, amphibians, reptiles, invertebrates, and garbage. |
 | | This gull can be distinguished by its medium-gray color with dark wing tips similar to the California Gull, except that it is smaller with a black ring encircling its bill and yellow-green legs. |
 | | This species is considered common in the fall, spring and winter, and rare during the summer. |
| www.nps.gov /goga/prsf/nathist1/wildlife/birds/ringbillgull.htm (115 words) |
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