Premature Fledging in Martins
It seems only recently I was counting eggs in all of the martin nests and now I'm seeing nestlings that are within a few days of fledging. After hatching it takes a minimum of 26 days from the time they're bare naked to fully feathered and ready to soar. The ones in the photo are 24 days old and when you have them 20 days or older you must be very careful during nest checks to prevent premature fledging. In other words trying to fly before they're quite ready to.
I do this by checking my records to see which nests have nestlings at this age or older and the moment I get the gourds lowered I will place a rag with a string attached into the entrance hole of that particular gourd. When I'm done I gently raise the gourds back into the air, wait 5 minutes or so to allow them to settle down and then pull the string removing the rag. Though some nestlings may still jump after settling I can refer to my detailed nest records and determine where it came from and place it back into its respective gourd. Hard to believe that the nesting season is about to end.
Labels: gourds, premature fledging, purple martin



