A Hunting Eagle???

[Leyrana Silumiel]

Ah-ha! I found it! I think I skimmed over it when I was looking ahead to find out what the eagle was supposed to be: (all bold emphasis is mine)

'What do you wish to know?' said Aragorn. 'All that has happened since we parted on the bridge would be a long tale. Will you not first give us news of the hobbits? Did you find them, and are they safe?'

'No, I did not find them,' said Gandalf. 'There was a darkness over the valleys of the Emyn Muil, and I did not know of their captivity, until the eagle told me.'

'The eagle!' said Legolas. 'I have seen an eagle high and far off: the last time was three days ago, above the Emyn Muil.'

'Yes,' said Gandalf, 'that was Gwaihir the Windlord, who rescued me from Orthanc. I sent him before me to watch the River and gather tidings....'

Hope this clears that up, at least. ^_^