In the cattail marshes of the delta lived the Yuma clapper rail
(Rallus longirostris yumanensis), a chicken-sized bird for which the security of the cattails provided places to rest, hunt, and raise their young.
For clapper rail
, king rail and common moorhens, limit is 15 birds.
Only time will reveal the spill's impact on many Gulf-breeding species, including the Brown Pelican, American Oystercatcher, Wilson's Plover, Reddish Egret, Least Tern, Black Skimmer, Roseate Spoonbill, Clapper Rail
, Seaside Sparrow, and Mottled Duck.
Also in trouble are the North Atlantic right whale, which numbers 350-400; the Sumatran rhinoceros, which totals 250; the black rhinoceros, whose population is less than 2,500; and the California clapper rail
, which numbers only 1,000.
It's the Super Bowl of "pssshing," the World Cup of binocular-toting nerds, the Olympics of clapper rail
We documented the nesting of 15 species of non-Laridae waterbirds: Neotropic Cormorant (Phalacrocorax brasilianus), Tricolored Egret (Egretta tricolor), Snowy Egret (Egretta thula), Little Blue Heron (Egretta caerulea), Great Egret (Ardea alba), Cattle Egret (Bubulcus ibis), Black-crowned Nightheron (Nycticorax nycticorax), Yellow-crowned Night-heron (Nyctanassa violacea), Green Heron (Butorides virescens), Roseate Spoonbill (Platalea ajaja), White Ibis (Eudocimus albus), Black-bellied Whistling-duck (Dendrocygna autumnalis), Clapper Rail
(Rallus longirostris), Snowy Plover (Charadrius alexandrinus), and Black-necked Stilt (Himantopus mexicanus).
For example, students participated in electro-shocking surveys for native fish in a pristine canyon stream, conducted Yuma clapper rail
surveys in marshland habitat, conducted nocturnal ranid frog surveys and identifications, conducted northern Mexican gartersnake surveys, and collected specimens for a captive propagation and release conservation project.
The San Leandro channel includes a bird sanctuary that provides habitat for a wide variety of waterfowl including the endangered California Clapper Rail
. The Clapper Rail
inhabits the marshland along the shore and is at risk of being disturbed after the end of of January when nesting season begins.
According to Joelle Buffa, a wildlife biologist at San Francisco Bay National Wildlife Refuge, clapper rail
numbers fell from 1,500 in 1980 to fewer than 300 birds in 1991.
A clapper rail
(Rallus longirostris) is the largest avian prey item reported (Grant 1970).
The reserve is home to the brown pelican, California's least tern, Belding's savannah sparrow, light-footed clapper rail
, blackrail, peregrine falcon, and other exotic birds and wildlife.
The secretive California clapper rail
, one of the original birds on the federal endangered species list with a current population of only 600, relies on salt marshes for its habitat.