They have babies. Baby birds produce poop sacks that the parents remove. They will often drop them in water or far from the nest. They are trying to keep predators away from the nest. I have a friend that had a Blue Bird that used to line the poop sacks up on her deck railing. It's just baby poop! LOL

Thanks Lisa!

wow... Baby poop, biggest bird poop I ever saw! Thanks for the info. I knew there must of been a reason, but I never would have guessed. Funny... there is no nest close by, my birdbath sure made an impression on the mom.

Allot of time parents eat their sacks, I have seen it in
Yellow Warbler and Cedar Waxwings.

Here you see both parents heaving a keen eye on their bud's,
then when one rises, they will pick it up, here, papa [front] took it, handed over to mom and she ate it.

...

Konrad

By the way, these Poop sacs come out of the baby bird's throat, then the parent whisks it away. It is nature's way of keeping the nest cleaner until the baby birds are old enough to sit on the edge of the nest, or actually leave the nest. Then they can poop anywhere they feel like it. Imagine all that poop being deposited in the nest itself with about 3 or four more birds doing the same thing.

Hi Charles,

>>Imagine all that poop being deposited in the nest itself with about 3 or four more birds doing the same thing.NO!!!!!! with the amount in the bath I cannot imagine them being left in the nest. I only wish the mom and dad's would find another place for the stuff! LOL

As I said....parents looking at their rear ends, picking up the poop and eat it, picture shows this.
Konrad

WoW-I'm so glad you posted these. I finally was able to get a pic of the yellow warblers, mostly they pass through, but think we have one nesting close by as I see/hear them daily... We found a nest by a body of water-had no idea they had gray babies though!!!

Hey Konrad, I was just thinking today that I had not seen you in awhile! How is it going up there?

You welcome Juantia,
Hopefully you get to see a nest, ..such a beautiful creation I have ever seen.

Lisa, ..it's going, I have been lurking a bit lately, mostly due to being busy, sometimes it seems the day a not enough hours.

Konrad

Charles - which baby birds produce the poop sac thru their throats? Sounds weird.

I've had a camera in my Bluebird house and have watched the mom put a bug in the baby's mouth and wait patiently while it swallows because immediately after it eats the baby will turn it's butt up into the air and produce a nice sac for mama to enjoy. ewwwww! lol The parents ate the sacs for the first week or so and then they started taking them out of the nest to throw away. I'm guessing that when the babies are really young they aren't digesting much of their food so the sac contains a lot of nourishment (yuck!) for the parent but after the babies are older they are producing more poopie poops for throwing away.

Well... the babies must have fledged as the poop sacks stopped being delivered a few days ago... Yippee!

Thanks for the info all!