Andy and I checked the local Sand Martin colony yesterday where we found approximately 200 Sand Martins together with enough holes in the quarry face to accommodate the possibility of 100 pairs. And all of this from a colony which has increased from a handful of pairs 4 or 5 years ago to its present size due to a period of gravel extraction. The colony is on private farmland where Chris the farmer is rightly proud and protective of his Sand Martins.
Everything looked right for a go at catching Sand Martins on Friday morning with a slight breeze from a friendly direction and a morning sun that would not shine directly on our single mist net. Andy and I were joined by Craig who next week flies off to bird observatories in Sweden and Denmark to further his University studies of birds.
Although we all had breakfast before we set off there was a posse of Grey Herons hoping to snaffle an early meal from Chris’ lake. This last week has seen an increased number of Grey Herons about as the yearlings begin to fledge nests and explore their surroundings.
Grey Herons
With such an active colony of Sand Martins a catch was assured. When we totalled up we found the catch to be 85 birds made up of 42 adult females, 34 adult males, just 3 fresh juveniles and 6 individuals left unsexed. One Sand Martin, an adult female, had been ringed elsewhere on a previous occasion as recognised by an unfamiliar ring beginning D996. The totals point to very few flying juveniles being around but obviously many more to come in the weeks ahead. So as not to disrupt the colony our next catch is scheduled for a week or two ahead when sun, wind and fine weather allow.
Field sheet - Sand Martins
Adult Sand Martin
Juvenile Sand Martin
Sand Martin
Eighty-five Sand Martins kept us pretty busy and so limiting birding time to 8 Oystercatcher, 8 Tree Sparrow, 1 Buzzard, 2 Mute Swan, 8 Canada Goose.
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Linking today to Anni's Birding and Eileen's Saturday Blog.
Linking today to Anni's Birding and Eileen's Saturday Blog.