How Long Do Chicks Take to Grow? A Week-by-Week Guide (UK Edition)
How Long Do Chicks Take to Grow? A Week-by-Week Guide (UK Edition) If you've just hatched your first batch of Light Sussex chicks or brought home day‑olds from a supplier, the first question you'll ask is: How long until they're fully grown? The short answer for heritage breeds like Sussex and Orpington? Around 5 to 6 months. But the real story is in the weeks between. Let me walk you through exactly what to expect week by week, what can go wrong, and what I wish I'd known before I lost a significant portion of my first flock. Week-by-Week Timeline: At a Glance Here's what you can expect from a healthy Light Sussex chick raised in a brooder (not under a mother hen). Age What Happens Key Needs Week 1 Fluffy, fragile, sleeps most of the time. Heat lamp at 35°C. Starter crumb, clean water, 24/7 warmth. Week 2 First wing feathers appear. More active. Heat lamp to 30°C. Starter crumb, clean bedding, quiet s...