LAS VEGAS—While Canada geese, ring-necked ducks and mallards waited for handouts, a lone cormorant seemed uninterested in bread crumbs a visitor tossed into the pond at Las Vegas' Lorenzi Park.

The cormorant, one of the double-crested varieties of the large, water bird typically found patrolling coastal areas, had its eye on the silvery flash of a rainbow trout—just one more fish destined not to get fried by anglers who frequent the park.

The cormorant paid no attention to a sign posted in the chest-high water warning anglers at the lake several blocks northwest of downtown Las Vegas to heed a "3 fish limit.".........

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