BP's Top Cap is Working, But Oil Spill is Still Spreading

BP's top cap is now siphoning more than half of the oil spewing from its damaged well in the Gulf of Mexico, but officials admit that the size of the slick is still growing and become more unmanageable with each passing day.

Though the containment cap was able to siphon off some 472,000 gallons, that still left massive quantities of oil spilling into the Gulf. 336,000 gallons of oil spewed into the open ocean today, said officials, adding to the approximately 39 million gallons of oil that have leaked since the start of the disaster 49 days ago.

VIDEO: BPs latest fix is working, but its not stopping all the oil from leaking.Play

While President Obama today promised that "we will get through this crisis," he cautioned that there is still a long road ahead, noting that it will take at least a couple of months before the spill can be fully contained using relief wells.

Other federal authorities acknowledged the scope of the problem that they already face -- a massive oil slick that has grown to cover an area the size of the state of South Carolina.

"The battle now involves hundreds of thousands of individual patches of oil," Admiral Thad Allen said in Washington today, acknowledging that the impact of the spill will last for years to come.

The patches of oil, which are inches thick in some places, have broken apart and are multiplying across the Gulf. Today, dolphins could be seen swimming through them, and the oil has already hit 220 miles of coastline across four states, Louisiana, Mississippi, Alabama and Florida. One third of the Gulf of Mexico's federal waters remain closed to fishing.

VIDEO: Dr. Richard Besser reports on the health risks of the BP oil spill.Play

Forecasts show that by Wednesday, the oil could spread as far east as Panama City, Fla., and the U.S. National Center for Atmospheric Research suggested that currents and wind could push the oil around Florida by early summer and move the slick up the East Coast, as far as North Carolina.

BP Promises to Release More Data on Flow Rate

BP promised today to release more information about the rate of the oil flow at the bottom of the Gulf. Kent Well, a BP senior vice president, said today that in the interest of transparency, the company will now disclose measurements of oil collected by the containment cap twice a day.

VIDEO: David Muir on the effort to save the animals affected by the oil spill.Play

"We will have a midnight-to-noon rate and noon-to-midnight rate," he said, while cautioning that the more frequent measurements will lead to more volatility in the numbers reported.

While continuing to drill the relief wells that should provide a permanent fix, BP plans two additional steps to further control the leak in the interim.

Using equipment that failed in the earlier "top kill" effort to stop the oil, BP hopes to be able to siphon more oil from the leak by mid-June. The company also hopes to place a larger top cap with a "better, tighter fit" on the well by mid-July, a spokesman said, which should give the company and the government more flexibility during hurricane season, if they are forced to abandon the accident site because of weather.

VIDEO: Washing the BirdsPlay
Cleaning the Gulf Coast's Oil-Drenched Pelicans

Not Enough Skimmers Working?

As for the oily mess that is already in the Gulf, BP sent a message on Twitter today that "more than 2,600 vessels are now involved in the response effort," thought the company later acknowledged that only 115 of those boats are actually skimmers, getting oil out of the water. That fact has many along the coast frustrated.

"We have too many of our boats sitting at the dock that should be involved in the cleanup," said Tony Kennon, mayor of Orange Beach, Alabama.

Kennon is one of several Alabama mayors who say they are outraged that BP is just showing now up in what they call their "forgotten" towns. The mayors said that local fishermen, now out of work, are desperate to help in the cleanup.

VIDEO: BP and the BeachesPlay
Gulf Disaster Day 49: BP's Cap Slows Oil Leak

"If you sensed our frustration, you would have been here a lot sooner," Kennon told BP vice president Bob Fryor, who visited Orange Beach seven weeks after the disaster started.

Today, following that outburst, there was a huge effort on the beach in Gulf Shores, Alabama, with local workers being organized in a cleanup effort by a BP contractor.

Treating Oiled Birds

The oil has already coated or killed hundreds of birds along the coast, including pelicans, gulls, terns and herons. In one facility in Louisiana alone, some 300 rescued birds are currently undergoing treatment that their caretakers hope will return them to health.

ABC News was given an exclusive before-hours tour of a bird sanctuary in Fort Jackson, Louisiana, where nearly 300 birds have been scrubbed clean.

"I always say they're fondued," said Jay Holcomb, executive director of the International Bird Rescue Research Center. "They look like they're dipped in it. And that's because they are. The reason for that is that they plunge into the oil to eat fish, they don't understand what the oil is, and they get covered in it."

When the birds are rescued, they're brought into the sanctuary and placed in wooden crates together. To clean the birds, rescuers first soak them in vegetable oil that they can "work into the feathers and loosen the oil up," Holcomb said.

After the oil comes a series of baths, with diluted dish detergent which is rubbed all over the animals. Workers sometimes use toothbrushes to protect the birds' eyes.

Then the birds are blow-dried and placed in makeshift pools where they can bathe and preen themselves. Remarkably, rescuers said they grow new feathers and created a refurbished coat in a little more than a week.

One fear rescuers have, Holcomb said, is that when the birds are released at cleaner beaches in Florida, many of the older ones will migrate back to their oil-soaked hunting grounds.

"The young birds might stay there [in Florida]," said Holcomb. "The adult ones want to go back to their babies and their nests, and there's that risk."

Bird rescuers are aware of the minority of scientists who say there's no proven track record for survival and that the birds should be euthanized. But the rescuers, who have responded to countless spills, say they've seen the success firsthand and believe that these Gulf birds will survive if rescued early.

Click here to return to the 'World News' page.

ABC News' Dan Arnall, Zunaira Zaki, the Associated Press and Reuters contributed to this report.