I spent about an hour at Gilbert Run Park (e. Charles County) this morning with no warbler activity at all and little non-warbler activity. I did get my first Ruby-crowned Kinglet of the season. And a pair of Blue Grosbeak were showing nesting behavior...both parents were very agitated at my spishing and the female held food in her beak and then headed for a thicket. Anyone know the latest date for Blue Grosbeak fledging? Fred Burggraf Charlotte Hall, MD (Charles Co.) fburggraf@aol.com