Peregrine Chicks’ Growth: Week 3

Both parents and four chicks during Week 3, 14 May 2026 (photo from the National Aviary snapshot camera at the Univ of Pittsburgh) 19 May 2026 As of last Saturday, 16 May, the Pitt peregrine chicks were three weeks old. Here’s a look at their development to reach Week 3 in a day-by-day slideshow from the National Aviary’s falconcam at the Cathedral of Learning. The age span is 15 to 21 days, date span is 10-16 May 2026. As you watch the slideshow notice how fast the chicks are growing. There’s a big change in seven days. 15 days old. 5/10/2026. Upright and alert. 16 days old. 5/11/2026. 17 days old. 5/12/2026. 18 days old. 5/13/2026. 19 days old. 5/14/2026. 20 days old. 5/15/2026. They have "faces." 21 days old. 5/21/2026. At 15 days: Chicks now sit upright and alert. Their primaries have emerged from the feather sheaths. (photo below) Notice that primaries have emerged from feather sheaths as this youngster flaps, 14 May 2026 (photo from the National Aviary snapshot camera at the…