Night or Day?

['thul]

Different bird, different prey, different time of day.

I don't know about owls carrying off moose for breakfast, though I have seen videos of golden eagles flinging goats off mountainsides... maaaa.

well, there is that bird from arabian legends known as "Roc". It was known to carry off elephants... So why not have birds carrying off moose?

In Arabian legends, the Roc are gigantic birds, often referred to as 'the Great', and capable of carrying off elephants for food. They are found in various stories of 'The Thousand and One Nights', and are also mentioned to by Marco Polo on his travels. Their eggs, according to Sinbad the Sailor, could measure up to 50 paces in circumference.