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The clapper rail was formerly treated as a subspecies of the mangrove rail (Rallus longirostris). [5] The decision to treat the clapper rail as a separate species was based on the results of a molecular phylogenetic study that was published in 2013. [8] [9] [10] A cladogram based on the 2013 genetic study is as follows: [8]
Numerous birds have been known to live on Hooks Island, such as the near-threatened California clapper rail. [10] In 2011, a Point Reyes Bird Observatory Conservation Science report found that approximately 14 clapper rails had been found in the Baylands, and 19 clapper rails were "known to exist" at Palo Alto Harbor and Hooks Island. [11]
It is the predominant habitat in the refuge, occupying 565 acres. It is a nesting, feeding, and cover area for birds and fish, including the endangered light-footed clapper rails and Belding's Savannah sparrow. A study on the light-footed clapper rail was conducted in 1979. One of the study areas is in the salt marsh in Anaheim Bay, the coastal ...
Ridgway's rail then breeds (California rail subspecies) in the San Francisco Bay from mid-March through August, with peak activity in late June. [6] During this breeding season the bird density was approximately 0.1 to 0.6 individuals per acre; outside of breeding season densities decline to 0.04 to 0.40 individuals per acre. [ 10 ]
The California High Speed Rail Authority has expected that it would be able to fill its $6.5 billion funding gap for the initial segment through federal grants, but, as the inspector had noted ...
The mangrove rail was formerly considered to be conspecific with what are now the Aztec rail (R. tenuirostris), Ridgway's rail (R. obsoletus), the king rail (R. elegans), and the clapper rail (R. crepitans), and more recently as conspecific with Ridgeway's and king rails. Worldwide taxonomic systems now agree that each of the five is a separate ...
The product: The Clapper The price: $24.95 plus $6.95 shipping and handling for a total of $31.98. The claims: It turns up to two plug-in lights or equipment on and off with claps. The Buy-o-meter ...
The operator of a new high-speed train, though, says it can get people from Southern California to Sin City in just two hours—and if they want to go in style, there’s an option for that, too.