Tim Mackrill

@timmackrill

Nature conservationist and writer. Ospreys, White-tailed Eagles and more with @roydenniswf. New book, The Osprey, available now. Founder @ospreylf.

Rutland bloomsbury.com/uk/osprey-9781… Joined April 2012

1.2K Following 4K Followers 4.8K Posts

Latest posts 5

Pinned post

Tim Mackrill @timmackrill Feb 14, 2024

After a lot of work and countless 5am starts, it’s AMAZING to have received my advanced copies of The Osprey prior to publication on 29th Feb. Thanks so much to @chiffchat for doing such a brilliant job. What an honour to have contributed to this iconic series.

Tim Mackrill @timmackrill Dec 18, 2025

Here’s an interview I did on BBC News about the disappearance of the White-tailed Eagles. We recovered the satellite tags from two of the birds which had clearly been cut off. More info here too roydennis.org/2025/12/17/thr…

3:20

Tim Mackrill @timmackrill Dec 17, 2025

I can’t begin to tell you how upsetting and disheartening it is to recover a tag that we had fitted to a young White-tailed Eagle just a few months previously, and which had clearly been cut off the bird. This happened twice this autumn and a third bird is also missing.

Roy Dennis Foundation @RoyDennisWF Dec 17, 2025

We're deeply concerned that three White-tailed Eagles have disappeared in suspicious circumstances.
The trackers of two eagles, including a chick from Sussex, were found dumped having been cut off with a sharp instrument.
More here: roydennis.org/2025/12/17/thr…
@SeaEagleEngland

View quoted post on X

Tim Mackrill @timmackrill Aug 11, 2025

A really positive summer for the White-tailed Eagle project.

Roy Dennis Foundation @RoyDennisWF Aug 11, 2025

We are delighted to report that two pairs of White-tailed Eagles have bred successfully in southern England this summer, rearing a total of three chicks at nests in Sussex and Dorset. You can read more on our website: roydennis.org/2025/08/11/two…
@SeaEagleEngland

View quoted post on X

Tim Mackrill @timmackrill Jul 31, 2025

Studying the diet of the White-tailed Eagles is a key part of the project. Our research has shown that fish becomes the favoured prey as the eagles mature and begin breeding. Learn more in our latest short film about the project.

Sea Eagle England @SeaEagleEngland Jul 30, 2025

In the final part of our new video series, we’re joining the project team to learn how they are working towards long term recovery of White Tailed Eagles in England.

Watch here: youtube.com/watch?v=Hj4g10…

@ForestryEngland @RoyDennisWF
View quoted post on X