Category: Birds

Another heron at RSPB Ouse Fen (Earith). There were 4 or 5 flying around. This is the Great White Egret, Ardea alba. It’s about the size of a Grey Heron, but white.

Quite a rarity in the UK, until maybe about 10 years ago, but like Little Egret, Cattle Egret, Glossy Ibis, and various other herons, it’s becoming an almost everyday sight in these here parts. I’ve seen perhaps 6 or 7 on the same patch at a different reserve, where there were also dozens of Little Egret and numerous Grey Heron. The GWE is not quite as common as the Little Egret now, but was removed from the “mega” list quite some time ago. It is far more common than the Purple Heron I mentioned recently.

Great White Egret is ostensibly an African/Mediterranean bird like those others. However, the species has been extending its range into Europe and the UK in recent years. Nudged by climate change, perhaps the main driving force is the presence of lots of crayfish in lakes in northern France that have given it a food source and the potential to hop across the channel. Once here, they find the old East Anglian gravel pits that are now full of water and marked as nature reserves a perfect home from home, it seems. Fairly common on the Somerset Levels these days too.

Back in June, we enjoyed seeing a lot of birds, butterflies, and moths in Greece. Many, if not most, of those were species rarely, if ever, seen in the UK. One bird we had a shout out from our skipper on Lake Kerkini was the Purple Heron, Ardea purpurea. I must confess I wasn’t quick enough to get a photo on the boat trip and not entirely sure I actually saw it among the Squacco and Night Herons that were in the reed as we rippled past.

Anyway, I was out looking for Bearded Reedlings at RSPB Ouse Fen (Earith), there were lots. A Bittern came up from the reeds briefly and ducked back down, as they do. There were also four Great White Egrets flying about. But, it was the odd-looking heron in the distance that was the most intriguing…it definitely wasn’t another Bittern, but didn’t look quite right for a Grey Heron.

When I got back to base camp, I checked the photos. It was obvious on zooming in on the photo Purple Heron, Ardea purpurea. Juvenile. The species is smaller and more slender than the Grey Heron, markings are different, and overall it has darker plumage. The species is more commonly found in Africa, central and southern Europe. However, juveniles do occasionally spread their wings from the near Continent between August and October and end up in East Anglia and beyond. Sighting now with the County Bird Recorder, Jon Heath.

Mrs Sciencebase remembered there had been reports of that species earlier in the year locally. I checked on Birdguides and she was right, there had been one here back in the summer of 2023 and a scattering of others over the last few years. Indeed, earliest Birdguides record I can see on the app is summer 2003 at Needingworth (which is now part of RSPB Ouse Fen).

Looking at the national sightings on the app, I can see sightings of Purple Heron in Somerset, Shropshire, Norfolk, Devon, Suffolk, Jersey during September and October.

This is one of my natural highlights of 2024. I will give you a full update of those on New Year’s Eve!

There are several species of parakeet present in European cities alongside the Rose-ringed, or Ring-necked, Parakeet, Psittacula krameri, also known as the Kramer Parrot. The others are Blue-crowned Parakeet, Thectocercus acuticaudatus, the Alexandrine Parakeet, P. eupatria, and the Monk Parakeet, Myiopsitta monachus. If we’re talking parrots in general, there’s also the Common Parakeet, perhaps better known as the Budgerigar, Melopsittacus undulatus.

The Rose-ringed Parakeet is well known in city parks and green spaces with trees across Europe from Athens to Amsterdam, Barcelona to Bonn, and Lisbon to London, and even as far north as Newcastle. The common sub-species in those cities is native to Africa but has adapted successfully to living in disturbed and urban habitats having escaped deforestation. Their presence in London has nothing to do with an imagined publicity stunt by Jimi Hendrix.

Rose-ringed Parakeets were and presumably still are a popular pet bird species and so escapees have fed into the feral populations. It is naturalised in many places now, breeding as if native. But, it is considered a pest in places where the sub-species in India has bred into massive colonies, but in Europe there does not seem to be a need to cull them. Peregrines, Hobbies, and Tawny Owls will all predate Rose-ringed.

Meanwhile, the Blue-crowned Parakeet is a native of South America. It is generally found from eastern Colombia to Curaçao in the southern Caribbean to the northern parts of Argentina. It prefers savanna-like habitats, woodland, and forest margins and so is generally not present in dense, humid forest like the Amazon. Introduced, as one might expect, to the USA, specifically south Florida, California, and Hawaii. It is now present in several cities across Europe too, Barcelona, Lisbon, Milan, Paris, Zürich, and on the Canary Islands.

A Blue-crowned Parakeet nest with eggs, subsequently predated, was observed in 2001 in Lewisham, southeast London.

We spent a few days in Lisbon in early October, our first time in the beautiful and cosmopolitan capital of Portugal. Man, it was nominally a city break to celebrate our 32nd wedding anniversary, which was earlier in the year. There had been the notion of perhaps heading up to the Tagus Estuary Nature Reserve to see the flamingos, but we didn’t get there in the end. We kept our eyes peeled for birds in between more conventional city sightseeing in the city, as well as Belém (west along the river) and Oriente (to the east, as the name would suggest).

We didn’t spot any Black Kites, Azure-winged Magpies, nor Hoopoe, which I’d hoped for, but there were lots of Crested Myna, Black Redstart, and Rose-ringed Parakeets at the Mosteiro de Jeronimos in Belém. A couple of hours at the Parque Eduardo VII added Sardinian Warbler, Short-toed Treecreeper, and Serin to the list. Then another couple of hours in the Botanic Gardens added two species of parakeet Blue-crowned and Rose-ringed.

It was wonderful to spend some time in the peace of the Lisbon Botanical Gardens away from the bustle of the streets and the trams. It was also warm and sunny while we were there and with the sight and sound of Willow Warbler and Blackcap around it was almost like a summer rewind. The deciduous trees were starting to show signs of the autumn, of course, but it was still 25 Celsius and very humid, twice the temperature it had been at home when we left Old Blighty.

We finally caught up with a load of European Serin, Serinus serinus, in the Edward VII park in Lisbon. Not seen this bird species before, it’s related to the Ethiopian Siskin and the Black-headed Canary, but you could also say it’s a distant cousin of the European Goldfinch and the European Siskin, to which is bears more than a passing resemblance. They’re all finches, basically.

The hopefully complete bird list for our four-day ostensibly non-birding trip. Birds without a place were seen in various places or just around Lisbon/riverside in general. Birds marked * are lifers for us.

Just to add, we saw a few Large White butterflies, presumed Speckled Wood, and a few Lang’s Short-tailed Blue, and also Velvet Carpenter Bee, and some fish in the river, but, that was pretty much it on other wildlife, as you’d expect from a city break.

Birds photographed with a Canon R7 mirrorless digital camera fitted with an appropriate adapter and an ancient Canon EF L 70-300mm f/4-5.6 IS lens.

Another view of the juvenile Osprey that has been feeding and resting at Milton Country Park since 5th September 2024. It is an unringed bird, so not a fledgling from the breeders at Rutland Water. It is, rather, most likely to have flown in from Scotland or Cumbria, a wild fledgling, heading to Gambia or a neighbouring country for the winter.

Usually, the adult birds tend to fly from their nesting sites right through to Africa without needing to stop over at country parks and the like. But, inexperienced juveniles, like all children, get hungry on a long journey and so this juvenile has stopped off to refuel. One person in the park reported that the juvenile had settled on their garden fence in the village briefly.

Having said that about the adults flying through, I also saw an adult at the park on the day I first saw the juvenile. More to the point, there had been reports of an adult on the Cam and possibly the same, or different bird, in nearby Chesterton and at Dernford Reservoir.

I think I missed seeing the juvenile catch a fish by minutes. When I caught up with it having hung around watching and waiting for an hour, it was eating a roach or a perch while being mobbed by corvids (magpies and jackdaws) on its usual oak perch in the park.

Pandion haliaetus – Sometimes known as the Sea Hawk, Rive Hawk, Fish Hawk. Only extant member of the genus Pandion. Molecular phylogenetic analysis shows that the Pandionidae is a sibling family to the Accipitridae and suggests that the two families diverged more than 50 million years ago. The Accipitridae includes the hawks, eagles, kites, harriers and Old World vultures.

UPDATE – 23 October 2024: The juvenile Osprey that appeared in Milton Country Park on the 5th September was last reported on its feeding perch on 21st October. It seems that it had finally headed south for the winter.

I asked expert Tim Mackrill, an ornithologist at the Roy Dennis Wildlife Foundation about the bird. “It is fairly common for juveniles to stop-over in this way during September and October, and some birds even stay into November, particularly on the South Coast [of England],” he told me. “Most juveniles depart their nest site before they have caught a fish for themselves, so if they encounter a location where they are catching fish relatively easily, they can often linger for a number of days or even weeks, as your bird did.” He adds that most Ospreys in England and Wales are ringed, but there are many Scottish sites where chicks are not ringed. “It is most likely that this was a Scottish youngster” he told me. “That said, some Scandinavian birds also pass through England on autumn migration, so that can’t be discounted either.”

If it reaches Africa, it will stay there for several seasons before flying back to somewhere near the place it hatched earlier in 2024 to seek a mate. Meanwhile, another migrating Osprey was seen at RSPB Fen Drayton on 22nd October.

Famously, there are nesting Ospreys at Rutland Water, which is probably the nearest spot we’d expect to see these breeding summer visitors. However, migrating birds on passage can turn up anywhere there’s water and fish if they sense a safe place to refuel on their journey to or from sub-Saharan Africa. I suspect the passage migrants mentioned in this post have flown in from much further north, Cumbria or Scotland, perhaps. No signs of leg rings and the Rutland birds are all ringed.

We have lots of gravel pits in this part of Cambridgeshire that have been repurposed as nature reserves and parks. One of them, Milton Country Park has seen lots of interesting birdlife over the last few years. You’re almost always going to see Kingfisher, Cormorants and various ducks and waders there as well as woodland birds and even occasionally exotic warblers. Geese numbers seem to be way down recently.

Back in late April 2014, a Eurasian Osprey turned up and hung around for a while. This was presumably a migrant heading north. The previous year one was present in September, presumably heading south. Prior to that 2008.

There’s an Osprey at Milton CP right now, first appearance, 5th September 2024 or thereabouts. It’s a juvenile. Not long after, an adult was seen on the nearby stretch of the River Cam at Bait’s Bite Lock. There have been some other local sightings in Chesterton and at Dernford Reservoir.

Mrs Sciencebase and I took a stroll around the Milton CP site on the morning of 14th September, and while we saw Kingfisher, there was no sign of any Ospreys. We had another try on the afternoon of the 15th and spotted one flying over one of the lakes. It was airborne for a few minutes before heading to a roosting point high in an oak tree, a spot others had seen it several times in previous days. We had great views of it in the air and then at its roost. It would occasionally bow, perhaps a precocious mating bow, so I suspect it’s a female. I saw no sign of it on the morning of the 16th September.

As we were leaving the park, we took one more look from a viewing jetty and saw another (adult) Osprey that had flown in from the direction of the River Cam. It had apparently fished briefly just before we saw it in the air and then it quickly disappeared back towards the river. This was definitely a second bird, as the roosting juvenile has a nick from one of its wings whereas this apparent adult did not.

County Bird Recorder, Jon Heath, interviewed in Cambridge Independent.

I’ve talked about warblers before. Basically, the warblers are a non-scientific grouping of similar birds. In the UK, we often see and hear  a variety of warblers, mostly summer visitors, among them Blackcap, Cetti’s Warbler, Chiffchaff, Garden Warbler (Sylvia borin), Grasshopper Warbler, Great Reed Warbler (occasionally), Lesser Whitethroat, Reed Warbler, Sedge Warbler, Whitethroat, and Willow Warbler.

I headed to RSPB Fen Drayton Lakes nature reserve on a promise of Arctic Terns as a big influx had been reported on Tuesday, some 36, arriving in two waves, 29 and then 7, from Grafham Water. This is a huge number for one inland patch, especially in East Anglia.

More often, we’d have Common Terns and only a sporadic appearance of single figures Arctic. I had alerted the local birding community to a Sandwich Tern on 17th April 2024. A relative rarity that unusually stuck around for several days at the reserve. We also get Black Tern on these lakes.

Anyway, I saw just a few of the Arctic Terns on the water. However, a nice patch facing out over Ferry Lagoon fringed with some very noisy trees and bushes had Garden Warbler and Sedge Warbler calling noisily alongside Chiffchaff, Lesser Whitethroat, and Willow Warbler. There were several of each species. There were also two or three Cuckoo calling from far off trees. That aside, I got a shot of one of the Garden Warblers. I thought it was my first attempt at photographing this bird, but I discovered that I had photos of it in the warbler post from 2022.

At least 43 birds on sight or sound this morning:

Footnote: We do see Grasshopper Warblers (Groppers) locally, but I didn’t today. Dartford Warbler was seen a couple of summers ago, but a fairly rare sight. I’ve seen the rather rare Wood Warbler, but not in the UK, it was up the hill in Split, Croatia, back in 2017 before we drank all that dark ale on the way down and had catfish and chips for tea.

More about the British warblers on the BBC Countryfile site here.