Eye on Nature: Your notes and queries

Turkey oaks, capercaillies and a motherly wren

We planted a turkey oak a few years ago. I’m thinking of removing it because of the risk it might pose to native oaks, through the gall-wasp connection.

Eugene Kelly

Lismore, Co Waterford

The knopper galls that afflict the acorns of pedunculate and sessile oaks are caused by a gall wasp, Andricus quercuscalicis, that passes part of its life cycle on the non-native turkey oak. Some regard this as an alien, invasive plant that should be removed.

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When driving through trees over a hill in Kilmanagh I saw an upright, pheasant-sized bird beside the road. It was shiny black with red patch on its head. Could it have been a black grouse?

Ingelise Stuijts

Kilmanagh, Co Kilkenny

It could have been a black grouse or a capercaillie that escaped from a private collection of game birds.

A wren has been feeding the tit fledglings in my nesting box, and removing the droppings in the same way as the parents do.

Des Hall

Cappoquin, Co Waterford

The wren may have lost its own brood.

Michael Viney welcomes observations at Thallabawn, Louisburgh, Co Mayo, or by email at viney@anu.ie. Please include a postal address

Michael Viney

Michael Viney

The late Michael Viney was an Times contributor, broadcaster, film-maker and natural-history author