[This message has been edited by Chessna (edited July 08, 2005).]
Good luck!
Maria is a Peregrine Falcon, as is said in chapter 2, and she is just to selfish and self-centered to care for a child.
Maria will play another role in a later chapter, but not for quite a while.
Riachelle raises Sprague until an event at the end of chapter 2 and the beginning of 3. He always will remember her as his real mother though, because Maria doesn't even treat him like a son in the later role. She doesn't even remember his name.
This is going to be a huge novel. That has always been my weakness in writing. There's just too much to write and it's too fun!
Since you are working in Omniscent POV, you can just come out and tell us that Maria is a Peregrine Falcon right at the beginning. You want to avoid withholding information from your reader. As soon as it becomes available, mention it so that your readers will trust you.
In fact, with this section, you might consider moving your second paragraph to be the first and place the first paragraph right after "...hatched into a tiger". That way, when you say "it hatched into a tiger," you can immediately answer the question in the reader's mind "What happened next" by telling us that Maria refused to raise him.
This is a pet peeve of mine. So far you've given me no reason to think that Sprague is unique because there's another tiger who's raised a dozen tigers. Part of my reaction to this is because Maria's refusal to raise him seems to have nothing to do with being a tiger--as if it were not unusual--and much more to do with being any sort of child at all.
Good luck with this.
In general, however, I personally have a very hard time with anthropomorphic stories. I recognise many have been very successful (Watership Down, Duncton Wood, Redwall etc) but I find it utterly impossible to really empathise with intelligent animals in the same way as I do with human (or elf/dwarf/alien) protagonists.