Common Tern; Charrán Común

The chicks in the first 3 pictures are probably about a couple of weeks old while in the 4th pic there are some which are perhaps a month or more old, approaching the size of adults and showing signs of adult plumage but still begging for food at times. Pic 5 has a couple about 2 weeks old in the foreground and pic 6 shows the 2 in the background of 5 to be about 3 weeks old or more.