Chick Development Library

A return-worthy section for chick photos and age comparisons.

Age	What to Watch	Record Tip
Day 1	New hatch, crop checks important.	Record hatch date and clutch order.
Day 5	Growth obvious; band timing approaching.	Prepare leg bands.
Day 7–10	Common ringing window.	Assign permanent ID.
Day 12–18	Pin feathers show colour clues.	Take photos.
Day 20–25	Colour becomes easier to read.	Update suspected mutation notes.
Day 28–35	Fledging period for many chicks.	Track fledged date.