What do you think this is? – baby bird poop apparently!

So, I was sitting out in our back yard, watching the birds, and a grackle came flying down and dropped something in the birdbath, before splashing around and then leaving. I went over to see what it was, and there were three of them in there…he/she had obviously been at this for a while. I thought maybe it was some kind of cocoon or something he was trying to soften up to eat later, but when I scooped it out with a little shovel and poked at it, it was soft. It’s pretty slimy, and one of them had burst open…the inside looked like poop or something. Pretty nasty. I can’t figure out what it is/where he got it…any ideas? Here’s a link to a picture – I didn’t want to resize it for the forum and lose any detail. I got as close as I could; the shiny things around it are sunflower seed shells, for an idea as to size.

http://i95.photobucket.com/albums/l128/limerance/Dsc01457.jpg

Edit : The answer has been found! It’s baby bird poop! 😆

Well, I don’t think it’s an egg…the insides looked all wrong 6.6 And it didn’t have that leathery feel a new egg would…it was more like…well, I guess it reminded me of a lot of spiderweb made into a cocoon, which is what made me think it was one. But I can’t figure out what that brown poop inside is. It doesn’t appear to be some kind of larva. >.>; I’ve seen spider eggs before, too…and if that brown crap was eggs, they were microscopic to the point that they just looked like mud. But who knows! There is a koi pond in our neighbor’s yard…maybe something he stole out of there? But it doesn’t look like a fish egg to me. x_x; I posted it on Yahoo Answers too, but I don’t have high hopes…usually all I get on there is people who want to comment and give themselves points. 9_9;;

Thanks siberakh =) I look forward to your Dad’s opinion! I considered maybe some digested food a spider was saving…but do they do that? I thought they just wrapped it up whole and saved it to suck dry later. >.>;…Srsly, it looks like something some creature pooped out/laid to me. There’s even like a little…trailing end. *barf* I guess that could be where it was attached to whatever the grackle picked it off of though.

And no, I did not smell it! :0 Gross me out~ It was hard enough to look at it…especially the one that had burst open. I almost gagged. >.>; Well, they’re probably still going to be sitting in the flowerpot I dropped them in when I fished them out of the birdbath tomorrow…maybe I can find some sucker to sniff it for me. 😀