Mingling of Species in Herd or Nesting settings

[Ramose]

I was recently visiting a bird nesting site in southern Florida and noticed several different species of unrelated birds (in this case wood storks, ibises and herons) all nesting in the same tree.  I was thinking about this and thought about how on occasion zebras and wildebeests will come together in a single herd.  Is there any evidence of dinosaurs of different species coming together to form a herd or nesting in the same area? 

[Dinoguy2]

There is the example of the juvenile Byronosaurus skull found in a Citipati nest. At first this was thought to be an example of nest parasitisim. But later they found a Byronosaurus nest just up the hill, and so the skull probably just got washed from one nest to the other. I'm not sure if the two nests are exactly the same age, but this is at least circumstantial evidence of two species nesting next to each other.

[amargasaurus cazaui]

Might wish to read Jack Horner's books regarding his work on "egg Mountain" .......if I can remember correctly he felt he had found a colonial nesting grounds that demonstrated nesting evidence for several species within a small area....

[CityRaptor]

Yep, "Digging Dinosaurs" ( got my copy signed when I meet him at ISPH ). At that time ( 1988 ) it was thought that the nests were Maiasaura and Orodromeus.  At least some of those Orodromeus nests turned out to be Troodon nests in 1996.

[Ramose]

Thanks everyone, very helpful!

[stargatedalek]

I seem to recall seeing it proposed that Deinonychus may have actually cohabitated with Tenontosaurus and only fed on deceased members out of opportunity. Was there ever anything particularly in favour of this?

[CAWCarcharo]

Maybe, Herbivores that feed on different Flora and are adept in filling certain Niches like Brachiosaurus altithorax might have congregated with Fauna that were more adapted for feeding on ground level Flora like Camptosaurus dispar, Stegosaurus stenops, Dryosaurus altus and Hesperosaurus (Stegosaurus) mjosi; with the larger Herbivores indirectly providing protection for the smaller Herbivores and the smaller Herbivores would also feed off the scraps left behind. Plus, the smaller Herbivores may have served as sentries for the large Herbivores.

[Neosodon]

I've heard that ankylosaurs would travel with iguanadont or hardrosaur herds but I don't know if their is any fossil evidence to back this up plus it seems like they wold have trouble keeping up. Ankylosaurs are popularly portraid as loners, but I've never heard much about how they actually lived.

[HD-man]

I was recently visiting a bird nesting site in southern Florida and noticed several different species of unrelated birds (in this case wood storks, ibises and herons) all nesting in the same tree.  I was thinking about this and thought about how on occasion zebras and wildebeests will come together in a single herd.  Is there any evidence of dinosaurs of different species coming together to form a herd or nesting in the same area?

There's the Lark Quarry coelurosaurs & ornithopods ( http://www.dinosaurtrackways.com.au/a-prehistoric-event ) & maybe the Morrison Formation Stegosaurus & Camptosaurus (See 8:00: https://www.youtube.com/watch?v=CldOrG7DQT0 ).

[Sim]

There is the example of the juvenile Byronosaurus skull found in a Citipati nest. At first this was thought to be an example of nest parasitisim. But later they found a Byronosaurus nest just up the hill, and so the skull probably just got washed from one nest to the other. I'm not sure if the two nests are exactly the same age, but this is at least circumstantial evidence of two species nesting next to each other.

D @Dinoguy2, can you provide a reference for this?  I'm sure what you're saying is true, since I've found a Byronosaurus nest here: https://artsandculture.google.com/asset/byronosaurus-nest-photo-amnh-m-ellison/cQFqet_4BBziYQ

Also Andrea Cau said the nest parasitism idea for Byronosaurus has been definitively dismissed: https://twitter.com/joschuaknuppe/status/1119433890035326976?lang=en

However, the Byronosaurus Wikipedia page has no mention of the Byronosaurus nest, and it still treats the nest parasitism idea as a serious possibility.  So that Wikipedia page needs updating.

[Dinoguy2]

There is the example of the juvenile Byronosaurus skull found in a Citipati nest. At first this was thought to be an example of nest parasitisim. But later they found a Byronosaurus nest just up the hill, and so the skull probably just got washed from one nest to the other. I'm not sure if the two nests are exactly the same age, but this is at least circumstantial evidence of two species nesting next to each other.

D @Dinoguy2, can you provide a reference for this?  I'm sure what you're saying is true, since I've found a Byronosaurus nest here: https://artsandculture.google.com/asset/byronosaurus-nest-photo-amnh-m-ellison/cQFqet_4BBziYQ

Also Andrea Cau said the nest parasitism idea for Byronosaurus has been definitively dismissed: https://twitter.com/joschuaknuppe/status/1119433890035326976?lang=en

However, the Byronosaurus Wikipedia page has no mention of the Byronosaurus nest, and it still treats the nest parasitism idea as a serious possibility.  So that Wikipedia page needs updating.

Apparently the paper on this is still forthcoming. The Byronosaurus nest a few meters uphill of the Citipati nest is fully described in this thesis: http://digitallibrary.usc.edu/cdm/ref/collection/p15799coll16/id/331907

Here's a pers. comm. from Norell to Jason Brougham (also of the AMNH) on the situation: http://dml.cmnh.org/2011Jul/msg00114.html

[Sim]

Thanks D @Dinoguy2!