Juvenile Sand Martins

Rufous to Silver

Something Adam Hutt pointed out to me a while back. How the plumage of juvenile Sand Martin varies. I got chance to see it up close and personal last week. Basically the commonest pattern on juvenile Sand Martins is of a warm brownish to rich rufous-brown fringes to the upperpart wing and tail feathers. However every so often you encounter a ‘Silver Guy’ on which the warm brown/ rufous is replaced by gleaming cold silvery white. The Silver Guys seem a lot less common and in my little sample I didn’t see and cline from one to the other but it was only a few birds.

Variety in birds is wonderful. Keep an eye out for the Silver Guys. Hopefully you can see what I mean below. Taken Spurn, August 2011.

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2 thoughts on “Juvenile Sand Martins

  1. Pingback: eilata Sand Martins | Birding Frontiers

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