Are the rosambro birds extinct?

[sovietkennels]

Just wondering if any hatcheries still sell them, or if anyone had an idea of theri genetic make up, or at least 1 picture of a grown one, thanks

 

[Kiki]

Have you seen this thread yet?
Rosambro /Rosssambro birds form Mt. Di | BackYard Chickens

 

[sovietkennels]

Yes, I've read every post on them, seems the last mentions of them was around 2012,2013, mt-di hatchery doesn't have a website anymore and seems like that was theri specialty bird. Picking up bits and pieces it seems like they might have been a cornish X mixed with a ranger type bird which I find very interesting , grow out about 2-4 weeks longer but they could walk and possibly live longer. All the posts I've read promised to post updated pics of them growing but never do

 

[Geena]

Yes, I've read every post on them, seems the last mentions of them was around 2012,2013, mt-di hatchery doesn't have a website anymore and seems like that was theri specialty bird. Picking up bits and pieces it seems like they might have been a cornish X mixed with a ranger type bird which I find very interesting , grow out about 2-4 weeks longer but they could walk and possibly live longer. All the posts I've read promised to post updated pics of them growing but never do

There are other hatcheries that are crossing CornishX and colored broilers now. Here's one

https://www.moyerschicks.com/product/robust-white-day-old-chicks/

 

[sovietkennels]

Thank you @Geena, that's exactly what I was looking for, hopefully more posts start coming up about robust whites in the future, just waiting for my brooder to free up from my lf cochins then ill order some (many graphs and charts coming) might even cross some robust whites to my biggest cochins to give them a decent shape

50% LF cochin
25% cornish cross
25% ranger type

 

[Molpet]

Thank you @Geena, that's exactly what I was looking for, hopefully more posts start coming up about robust whites in the future, just waiting for my brooder to free up from my lf cochins then ill order some (many graphs and charts coming) might even cross some robust whites to my biggest cochins to give them a decent shape

50% LF cochin
25% cornish cross
25% ranger type

duluth ralphie got some of us breeding cx to rangers .. https://www.backyardchickens.com/threads/toads-the-perfect-chicken.994977/#post-15473211
I have crossed a heritage roo to cx hen and have been eating them for a couple of years now

 

[sovietkennels]

@Molpet I've been following the toad line closely, just seems he's having issues with heart attacks like the the cornish X's, I believe his toads are
Cornish X cornish = F1
F1 X ranger = F2
F2 X cornish =F3 (toad)
75% cornish
25% ranger, which is probably 25-50% cornish itself, which is too much cornish I believe.

If I recall Ralph is now doing
F3 (toad) X Buckeye = F4 (toad v2) or somthing of that sort.
50% Buckeye
37.5% cornish
12.5% ranger

Following his strategy the robust whites would get me to his F2 step, then to take to LF cochin would be
50% cochin
25% cornish
25% ranger

 

[Molpet]

@Molpet I've been following the toad line closely, just seems he's having issues with heart attacks like the the cornish X's, I believe his toads are
Cornish X cornish = F1
F1 X ranger = F2
F2 X cornish =F3 (toad)
75% cornish
25% ranger, which is probably 25-50% cornish itself, which is too much cornish I believe.

If I recall Ralph is now doing
F3 (toad) X Buckeye = F4 (toad v2) or somthing of that sort.
50% Buckeye
37.5% cornish
12.5% ranger

Following his strategy the robust whites would get me to his F2 step, then to take to LF cochin would be
50% cochin
25% cornish
25% ranger

You are correct on his progression
Keep us posted on your progress