The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds

The chicks are 17 days old. Normally fledge about 18 to 21 days after hatching. Nest building started 23 March. The first egg was laid 14 April. #bluetit #nestbox #chicks #babybirds