I officially started my meat bird project this month. (Really I've been working on it MENTALLY for like 6 months, but I just got my chicks about a week and a half ago...) Here is what I'm working with: I ordered 25 birds from Welp Hatchery - 5 Dark Cornish (DC) cockerels, then 5 males and females each of Delawares (DEL) and White Rocks (WR). Unfortunately, Welp made a mistake and accidentally forgot to include my 5 WR pullets, so they sent me another 10 straight run WRs the following week (at no extra cost, THANKS WELP!!!). With the extras they sent, I have 33 total: 5 DC cockerels 9 WR cockerels 7 WR pullets 5 DEL cockerels 7 DEL pullets My plan is to keep the largest/healthiest rooster of each of the 3 breeds, and the largest/healthiest 4-5 hens from the WRs and DELs. This will give me a decent amount of eggs, and good breeding stock for a sustainable meat flock. I will then make DC x WR, DC x DEL, WR x DEL, DEL x WR, and of course pure WR and pure DEL. But I digress - I've been thinking "in the future" for 6 months already, now is the time to LIVE IN THE PRESENT! Back to reality - For the first 10 days, I started them on 24% chick starter, then dropped them down to 22% (50/50 split with 20% starter/grower). So far, I've noticed that the Delawares are not growing as fast as the others - I expected them to grow a bit faster than the DCs, but not so much. The DELs are averaging 125 grams, the DCs 128.5g, and the WRs a WHOPPING 160g! I weighed them all a few days after I received them, then at a week and 1.5 weeks, and the AVERAGE weights are below. I will continue to weigh them now weekly going forward: 3 days 1 week 1.5 wkDC 61.8g 84.4 128.6 DEL 60.4 81.6 124.9 WR 68.8 100.6 160 The WRs so far are growing much better and seem to have a better feed conversion rate - this is likely to change, and of course they are all in the same brooder so I can't tell if they're eating more than the others but it makes sense that they are. They are also all cockerels, since the pullets weren't shipped for another week. The WR pullets weighed in at an average of 65.7g at 3 days old, so still much better than the DELs and DC. I know it's premature since they are only about 13 days old, but I'm seeing a definite reason why WRs are the chosen breed to mix with Cornish. In another 20 weeks when they're all old enough to breed, I will be able to get better numbers as I will only raise one breed at a time. I know DELs are supposed to be a bit more heat tolerant than the WRs, and in FL that was my first concern. But the tractor I will put them in has an insulated roof, will be in the shade, and should have plenty of circulating air to keep them from overheating.