Category Archives: Cornwall

Birds building in all five boxes.

It’s Building Time!

April 4th 2018

The chough nest box webcams are now live – click here. (The link does work this time!)

The almost-continual rain has now stopped, and our birds are building in earnest.

Birds building in all five boxes.

Birds building in all five boxes.

We are now into the stage of supplying the nest aviaries with materials. We start with large twigs, then move on to smaller twigs and heather.

In a few days time we will be adding moss and lichens – finally finishing with horse hair.

First choughs checking the nest boxes

2108 Nest Cams Online

28th March 2018

The chough nest box webcams are now live – click here.

After a long winter of rain, rain, more rain, and then snow, our breeding aviaries are ready for birds. The choughs were put in this morning, and are already checking the boxes.

Later today we will put twigs in the aviaries, and the nest-building will start in earnest.

The recent cold, wet weather has pushed back the start of the breeding season, but looking at the birds’ behaviour, they are ready to go!

First choughs checking the nest boxes

First choughs checking the nest boxes

Two chough chicks being weighed

May Breeding Update

The chough breeding season is going well here at Paradise Park. So far we have only lost one chick this year. The second chick in nest three died just after hatching – giving an indication of what a traumatic experience breaking out of an egg can be.

We now have three nests with two siblings and one with a solo chick. This gives the parent birds every chance to rear the youngsters, while we closely monitor weight gains and general health. If a chick falls behind, we can give it a boost with supplementary feeding and medication where necessary.

Two chough chicks being weighed

Two chough chicks being weighed

However, the youngsters have kept us on our toes. The larger chick in nest five suddenly started “stargazing” – it’s head folded almost flat over its back. Very worrying. We gave it a course of antibiotics, along with gapeworm treatment and vitamin supplements. The head stayed in the same postion for two days, with the parent birds somehow managing to feed it. Then overnight, the head returned to normal position, much to our amazement.

We had a further scare when the younger chick in nest two had one eye closed, and did not open it even when being handled or fed. Once again, a course of antibiotics soon had it back to normal.

"Stargazer" looking casual and back in nomal health

“Stargazer” looking casual and back in nomal health

Most the chicks are now above 200 grams in weight, and it is at this point that we stop taking regular weights. One practical reason for this is that the chicks are beginning to get highly mobile, and when put back in the nest start climbing around.

Another reason is that their feet are now fully developed, and have unbelievably clinging claws. Sometimes trying to get the birds out of the nest can mean pulling some of the nest material out along with the chick, resulting in potential damage to the nest or chick.

We have noticed that the nests this year seem to be less robust than normal – possibly as a result of the birds being put into the aviaries at a late date (due to bird flu movement restrictions).

This is the first year we have seen the chicks sitting on the floor of the nestboxes, on the wood of the box itself. This could lead to the chicks having splayed or deformed feet.

The solution – the Trump Toupee! Once the birds were large enough, we slipped a coir mat underneath, giving them something to grip on to. (We did not do this when they were too small, as there was a risk of the parents pulling the whole thing out – along with the chicks.

Two contented chicks - "Stargazer" and sibling

Two contented chicks – “Stargazer” and sibling – and Alison

A Fourth Egg in Nest 3

A Busy Weekend

The fine weather has brought a flurry of egg-laying activity.

A Fourth Egg in Nest 3

A Fourth Egg in Nest Three

On Saturday we eggs were laid in nests one, two, and three. (It is likely that the third egg in nest 3 was laid overnight on Friday).

On Sunday, another egg arrived in nest 3, this was first noticed at lunchtime.

Monday brought three more eggs, with additions in nests one and three. Later in the afternoon we had the arrival of the first egg in nest five. This may be a record, as the female in the nest will be nineteen years old this year – making her the oldest known breeding chough.

It gets more difficult to give exact timings, as the females are now sitting on the eggs for longer periods, as incubation begins in earnest.

So, the total at the end of Monday 10th April – nine eggs in four nests, with more on the way…

2017 Female in Nest 3

First Egg of 2017

Just a few days later than last year, we have our first chough egg.

It was laid by the female in nest 3 – she was also the first of our birds to lay last year. She went on to lay four eggs in total. Two of the chicks which hatched were later taken away to be hand-reared.

This female is a seven year-old, and has laid several clutches in the past. Her male partner is a very good parent – taking good care of the chicks when hatched.

Screen shot of all five nest sites.

2017 Nest Cameras Online

Our breeding birds are now in the seclusion aviaries, and nest-building is under way.

Screen shot of all five nest sites.

Screen shot of all five 2017 nest boxes.

We have installed new high-definition cameras, which show amazing detail of the activities in the nest boxes.

So far, we have four good nests – all from proven breeding pairs. Nest four is a new pairing, and we are still hopeful of nesting soon.

The female in nest five was hatched in 1998, making her nineteen years old this year! She has built a wonderful nest, and will probably lay a clutch of eggs. The clutch she laid last year was infertile, but she may be used as a foster-parent if the opportunity arises.

The webcam can be seen here.

Six choughs ready for their longest flight so far

Six More to Jersey

Six young choughs bred at Paradise Park this year have gone to Jersey to be released.

Lee Durrell and Colin Stevenson collected them by plane on August 31st, arriving at Perranporth airfield, near Truro, as they have done in previous years. Lee and Colin were accompanied by Durrell staff Bea Detnon and Jessica Maxwell.

Going by plane saves many hours travelling by ferry, and we are very grateful for Lee and Colin’s help with this. The flight takes just over an hour and means the young choughs will be in the release aviary by the afternoon, after veterinary checks.

Six choughs ready for their longest flight so far

Six choughs ready for their longest flight so far (Pic R Hales)

Chough Re-introduction Field Manager at the Durrell Wildlife Conservation Trust, Liz Corry, was waiting for the birds to arrive. She has planned for the arrival in advance.

The six choughs bred at Durrell Wildlife Park were released a few weeks ago. These birds are to be mentors for the new arrivals. They have been lured back into the release aviary and the Paradise Park birds will join them.

After a short period of quarantine, the whole group of twelve will be let out together to mix with the larger flock. The six local birds will share invaluable knowledge with the new birds, improving their chances of survival.

line240
It is incredibly gratifying to see at first hand the young birds we have raised heading off to be released. Just four months ago we were feeding and weighing these youngsters, and now they are off to Big School…

Chough chick being monitored and weighed. May 2016.

Chough chick being monitored and weighed. May 2016. (Pic A Hales)

Chough chick aged 24 days being weighed.

Happy Birthday!

Today is Operation Chough’s Birthday!

Chough Flying into the Sunset. The Lizard 2002. Pic Ray Hales.

Chough flying at sunset. The Lizard 2002. Pic Ray Hales.

We have long admired the Red-billed Chough’s intelligence and beauty – how could we not be inspired to help this magnificent bird and see it flying again over coastlines where it had disappeared?

Mike Reynolds and Robin Hanbury Tenison August 4th 1987

Mike Reynolds and Robin Hanbury Tenison August 4th 1987

The official launch was back in 1987 – not a good time for chough-lovers as the species had died out in Cornwall. But things were about to change…

The natural recolonisation by three birds in 2001 gave us great opportunities to observe the behaviour of wild birds right on our doorstep.

A Breeding Pair of Wild Cornish Choughs, on the Cornish Coast 2016.

A breeding pair of wild Choughs on the Cornish coast 2016. Pic Ray Hales.

In the 1980s we had had some success in breeding choughs here at Paradise Park, but it was just one or two chicks a year, as we learned what they needed. Now we have become somewhat expert and our captive pairs produce around ten chicks each year.

Chough chick aged 24 days being weighed. Ray Hales 2014.

Chough chick aged 24 days being weighed. Ray Hales 2014.

This has enabled us to fulfil our objective on Jersey and with the help of our hard-working partners at the Durrell Wildlife Conservation Trust, thirty – yes THIRTY – choughs are now living free on the island after an absence of 100 years. The method used for the Jersey release is a template for further re-establishment to help join up the scattered populations and spread genetic diversity.

Choughs on Jersey going to Roost. Pic Liz Corry.

Choughs on Jersey going to Roost. Pic Liz Corry.

Long live the chough!

A good year for Cornwall’s Choughs

In fact it’s been a very good year for Cornwall’s Choughs!

Chough update from Rare Bird Alert, 5th July 2016

Chough update from Rare Bird Alert, 5th July 2016

With 23 choughs chicks fledged, the 2016 breeding season has been really successful.

Of particular interest this year:

  • a pair bred in the Roseland area, probably for the first time since the 1820s
  • one-year-old birds successfully reared young
  • there are currently 54 choughs living around the coast of Cornwall

Read more on the Rare Bird Alert website here.