Attenborough Sand Martin colony – Weds 14 June

The results from this morning’s mist netting session. A total of 39 birds were caught, 19 new birds and 20 retraps.

 

The new birds comprisd:

• 5 adult males
• 8 adult females
• 6 juveniles. As all of the colony’s pulli that have fledged this year have been ringed, these birds have been raised away from the colony and are in the process of post-juvenile dispersal. It is unusual for such a high proportion of new birds caught to be juveniles. These birds are further advanced than the colony’s juveniles, which are too young to be undertaking this dispersal yet, so might have come from a colony to the south of Attenborough.

 

The retraps comprised:

• 12 birds that had recently fledged from the colony (many of which had not fledged on the last check on the 12^th!) 
  
• 5 adult males
• 3 adult females
• Of these 8 adults –
  • 1 was ringed as a pullus in Bagworth Heath, Leicestershire in 2019 and retrapped at ANR in 2020 and 2021
  • 1 was ringed as a pullus at ANR in 2020
  • 3 were ringed as a pullus at ANR in 2021
  • 1 was ringed as a pullus at ANR in 2022
  • 2 were ringed as adults at ANR in 2022

 

Phil