Wednesday, 21 November 2018

Barn Owl by day, in North Kerry

A rare treat indeed to see a Barn Owl hunting in daylight anywhere in Ireland and oftentimes it is a sick or injured bird, or perhaps one forced to hunt in daylight after prolonged bad weather when hunger might drive them out to risk the wrath of the local crows. Not this one it seems, which seemed healthy and well and was actively hunting over rough fields in North Kerry over several recent evenings. Click on any of the images for a closer view.

Barn Owl, North Kerry, 15th November 2018 (Herbert Servignat).

Barn Owl, North Kerry, 15th November 2018 (Herbert Servignat).

Barn Owl, North Kerry, 15th November 2018 (Herbert Servignat).

Barn Owl, North Kerry, 15th November 2018 (Herbert Servignat).

Thursday, 11 October 2018

Barn Owls nesting in urban areas

In some years, we receive records of Barn Owls nesting in urban areas. The nests are almost always in the chimneys of derelict or disused buildings and another feature they have in common, mostly, is that although the nest site is along a busy street, there is often ready access to open countryside behind or beside the building.

This summer four new sites have been discovered and reported to us, all along busy streets in towns and villages in the Midlands. We'll keep the locations confidential but here are some images of the urban nests.

Above) Although within a busy main street near the centre of a small Midlands town, Barn Owls nested in the main chimney on the left, of this disused three story building. Although seemingly hemmed in by other buildings, there was a churchyard opposite which backed onto open countryside. Despite street lights, traffic, and all the noise and commotion of the town, they successfully fledged two young.

Above) Another nest site where Barn Owls successfully raised two young this summer. Open countryside in this case was right behind the small back garden of this disused building. The owls could easily commute to nearby hunting areas even though the nest was lit by streetlights and subject to the usual hustle and bustle of human activity.

Above) One of the more remarkable nest sites from this summer was in the chimney of a three story building with a busy shop and street below. This site was also noteworthy in that it had no immediate access to open countryside, being fully two streets of built-up area from the nearest fields, so the adult owls would have had to fly across rooftops and gardens to hunt.

Barn Owls are typically very shy of human activity, so it is great to see that these types of nest sites can be useful to them, despite being in busy urban areas. At all such sites this summer the owls were spotted by locals who were concerned for the nest and young and anxious they not be disturbed, so once again, members of the public have proven to be a great ally to the owls. In more than one case, appreciative observers would gather each evening to watch the owlets emerge and the adults arrive with food and there seems to have been no issues of disturbance or ill-effect for the owls. In fact the nests would seem to be pretty secure, and certainly less vulnerable to ground predators such as Pine Marten.

It will be interesting to see if this is a new development and that maybe urban-nesting Barn Owls are becoming more frequent. It could be that they are being reported more readily now, or that indeed the owls are developing more tolerance to human activity and exploiting nest sites that they might otherwise have ignored in the past.

If you know of a Barn Owl nest site - urban or otherwise - do please let us know.

Tuesday, 14 August 2018

Unusual nesting season for Barn Owls

It has been an unusual year for nesting Barn Owls.

It seems that, on average, nest sites in the Midlands have been unusually late, while sites on the west coast and far south-west have been significantly earlier - the reverse of the norm. Quite what has caused this is difficult to ascertain, though a notably cold April and May may have had an impact.

Another strange development is, despite the western sites being a little early this year, many of the traditional and previously productive sites in those areas have failed, or been abandoned.

It seems too that the fantastic summer weather has favoured those pairs that did get to nest, with brood sizes and survival being high. Certainly, in many of the later visits to sites, there was an abundance of surplus mice and vole prey around the nests.

A healthy brood of three Barn Owl chicks in a newly-used nest box, Co. Cork, August 2018.

In Kerry, where brood size was accurately known, the average brood size was 2.55, slightly higher than the yearly average of about 2.2 chicks per nest.

In Cork, this figure was higher again at an average 3.14 per nest.

Fledgling Barn Owl, at a about 60 days of age, and just about ready to leave its' nest box, Co. Cork, August 2018.

Despite the loss of some sites, there has been further uptake of new nest boxes around the country, showing the value of providing safe and secure nest sites. More soon...