Can someone help tell me how old my chicks/ducklings are?

[caseymarie05]

I got 6 Americaunas and two ducklings at a store this past Friday and I'm not sure how old they are to know when they can be moved outside, be introduced to my flock, etc. I'm fairly new to raising chickens as I took over my dad's flock when my father passed away. I also have 4 adult ducks in the flock that will have ducklings of their own in about 1 1/2 - 2 weeks. And new chicks outside this weekend or early next week. Oh and right now lows at my house are around 40 and highs 60's

 

[jgnveg]

We usually move ours outside at about eight or ten weeks, but still bring them in and under a heat lamp at night, and we're in much warmer weather.
Basically, once all of their down feathers are covered by their external feathers, they should be ready. Those ones are looking to be about two or three weeks. Make sure that when you take them out, you do so somewhat slowly and on a warmer day, so they can acclamate to the weather better.