Day 28: Nearly full grown size and weight

June 9, 2017 in In the Nest Box

2017.0609-001As they approach four weeks of age, the chicks are rapidly growing their juvenile feathers both below and above, and are looking visibly darker with each passing day.

At day 28, the chicks are nearing the midpoint of their transition from down-covered chick to juvenile-plumaged fledgling, and are nearly full-grown in terms of body size and weight.