Raptor tracking study: on the move

Well it’s been busy month for BAWC and all those interested in combatting #wildlifecrime. It was great to discuss our raptor tagging study with many BAWC supporters at the various Hen Harrier Day events earlier this month. Last weekend at Birdfair we had many discussion about the tagging work and how many of you hoped that this really starts to shine a light on what is going on with our raptors in the UK uplands. With so many Hen Harriers tagged in recent years, even if not all the data is yet in the public domain – hopefully Natural England will share the publicly funded results soon. And with shed loads of Golden Eagles being monitored in Scotland, it seems like we are approaching a period of enlightenment when it comes to understanding the movements and fate of our magnificent birds of prey. The BAWC funded study continues to gather data and so far there have been no real surprises. The birds tagged so far have all stayed close to their nest sites with very little movement or dispersal. Visual observations of many of those birds have shown the birds to be in good health and behaving as expected. One bird has been a little more adventurous than the others and has made a significant movement of about 46km – the movement can be seen in the image below (in yellow). A nearby bird has ranged no more than 1-2km.

Thanks again, to all BAWC supporters who donated to this project. Without your support and generosity this project would not have been possible.

map of bird movement

 

Peregrine image by Phil Walton

Raptor tracking study: all systems go

The licensed raptor tagging team have had a very busy few months locating and monitoring territories and nests. As previously mentioned (see here) a number of known territories were unexpectedly vacated and adults mysteriously disappeared, but despite this, we have tagged a number of raptors in the north of England and we are regularly receiving data from their tags.  The birds have been seen regularly by our field team and our observations in the field and data from the tags show that the birds are behaving normally. The plot below shows the movements of one of the birds to show the type of data that are being collected.

Obviously, we are still being very uncommunicative about which species and which localities are involved in order to protect the birds and the study.

These young birds may well start to disperse over the next few weeks, it will be interesting to see, and then they may travel large distances.  We will provide periodic updates on their travels and if they come to any harm then you will hear much more about them.

If you are interested in learning more about how satellite tracking can help us understand more about raptor movements and their fate, then please read the excellent scientific review commissioned by Scottish Natural Heritage (see here). Although this report is aimed at Golden Eagles in Scotland, the principles apply to other species and other locations.

Thanks again, to all BAWC supporters who donated to this project. Without your support and generosity this project would not have been possible.

Hen Harrier image by Gordon Yates

BAWC raptor tagging project update

Image of Red Kite

We’re sure many of our readers would have seen the shocking reports of two cases of blatant birds of prey persecution being dropped by COPFS in Scotland (here and here). The timing of the decision to drop the cases means that no further action can be taken – this has shocked many in the BAWC community. However, the sense of injustice is only making us more determined than ever to play our part in defeating the wildlife criminals.

It is now almost two months since the BAWC community exceeded all of our expectations and generously donated more than £20k for our first field-based project. We will be monitoring raptors using state of the art satellite tracking technology to look at dispersal and survival. As many of you will appreciate we have been keeping the specific details of the project just to those who are directly involved – this is for the safety and welfare of the project team. However, whenever we can, we aim to give project updates so that you can all be assured that your money is being spent wisely and that you are aware of progress.

Since the fund-raising was completed, licensed raptor workers have been checking known territories of a range of species across the north of England – looking for new or renovated nests, plucking posts and fresh kills, as well as displaying adults. The usual picture emerges of many territories being occupied and then adults disappearing. It’s difficult to know how many of these vacancies arise by natural causes and how many are due to more sinister causes. Despite fewer occupied territories than expected we are confident we will be tagging birds this breeding season. The next couple of months will be spent monitoring active nests so that we know the ages of the chicks and can decide which ones to tag on which dates. It will be interesting to see whether any of the young birds that we plan to tag will occupy these sites next year, and what happens to them.

And of course the tags have been ordered and paid for using the money raised by BAWC supporters. Thanks to your generosity we were able to order more tags in this trial year, and testing them prior to deployment will be underway shortly.

Image of Red Kite

Images courtersy of @lincssnapperwww.stevenesbitt.co.uk