Spring Bear & other wildlife

The busiest season in our year has just began with fieldworks, trips, guidings ect. We spend most of our time outdoors, gathering a rather large amount of sightings & photos... not always easy to squeeze in a single blog post! Here's another one of our "summary posts" covering different areas of Slovenia and including the Karst, Notranjska and Škocjanski zatok. This time we'll start with the most interesting recent observation.
Last Sunday we've been lucky to spot our first Brown Bear Ursus arctos of the year, while escorting a mixed group of UK and Swedish birdwatchers around the forests of Notranjska. The young Bear was spotted and watched from the car, as we were driving on a forest road. It gave excellent and prolonged views as it is frequently the case with young and curious Bears. It was a lifer for all of our guests and needles to say, a great addition to the already interesting bird list of the day. 

Brown Bear Ursus arctos

Despite the terrible weather (rain showers and wind), we've been able to see some interesting birds. In the Javorniki-Snežnik forest complex we were lucky to observe a female White-backed Woodpecker Dendrocopos leucotos and two different Ural Owls Strix uralensis. We watched one of the latter being chased by a Buzzard Buteo buteo as it was peacefully waiting for its meal at the side of a forest glade. Other good birds in the forest included Grey-headed Woodpecker Picus canus, many singing Cuckoos Cuculus canorus, Willow Tit Poecile montanus and Firecrest Regulus ignicapillus. 

Later we moved to the shores of lake Cerknica where the highlight were at least 15 Red-footed Falcons Falco vespertinus hunting in the wet meadows, along with a Hobby Falco subbuteo and 2 Montagu's Harriers Circus pygargus. Other birds of note on the lake included Black-winged Stilt Himantopus himantopus, Wood Sandpiper Tringa glereola, Greenshank Tringa nebularia, Lapwing Vanellus vanellus, White Stork Ciconia ciconia, Whinchat Saxicola rubetra, Wheatear Oenanthe oenanthe, Common Whitethroat Sylvia communis, Sedge Warbler Acrocephalus schoenobaenus, Garden Warbler Sylvia borin and the first Red-backed Shrike Lanius collurio of the season.

Red-footed Falcon Falco vespertinus

An interesting appearence in beech forests at this time of year is the impressive Tau Emperor Aglia tau. This large moth can be most easily observed on sunny days along forest roads, as it flutters restlessly around, without stopping. While we visited the forests of the Nanos plateau last week, we counted at least 10 of these moths in a relatively short stretch of road and managed to catch one with the butterfly net. On Nanos, interesting was also the observation of an immature Golden Eagle Aquila chrysaetos, gliding along the plateau's edge around mount Suhi vrh (the higher "cousin" of mt Nanos).

Tau Emperor Aglia tau

Mt. Nanos (left) and mount Suhi vrh (right) above the Nanoščica river valley.

Meanwhile we've been also around our usual circuits in the Karst, enjoying the ever increasing species of orchids and other plants in flower on the meadows and in the forest. On the bird front we spent quite a lot of time following a pair of Black Storks Ciconia nigra and trying to find out their nesting site to confirm the breeding - so far unsuccessfully, but the hunt continues...

Raptor migration is evident in the skies as we also observed 2 Griffon Vultures Gyps fulvus migrating SE as well as 4 Montagu's Harriers Circus pygargus and a Marsh Harrier Circus aeruginosus above some open meadows. The first returning Golden Orioles Oriolus oriolus can be now heard in broadleaved woodlands and are somehow easier to spot at this time of year as some of the trees are still leaf-less (oaks in particular).

Apart from hearing the pleasing songs of Cuckoos Cuculus canorus, Hoopoes Upupa epops and Wrynecks Jynx torquilla, we are also very happy about the presence of a male Common Redstart Phoenicurus phoenicurus holding territory in the gardens around our house. It is a widespread breeding bird across Slovenia, but slightly more localised in the Karst where maybe every second village has one or two pairs. Among interesting invertebrates seen recently was also our first Scopoli's Longhorn Beetle Cerambyx scopolii in our garden. Southern Festoon Zerynthia polyxena also occasionally makes an appearence in the garden, while it is more commonly encountered on dry meadows.

Hoopoe Upupa epops

Griffon Vulture Gyps fulvus

Whinchat Saxicola rubetra

Wryneck Jynx torquilla

Nightingale Luscinia megarhynchos

Montagu's Harrier Circus pygargus (with Hooded Crow Corvus corone cornix)

Common Redstart Phoenicurus phoenicurus & Whinchat Saxicola rubetra

Golden Oriole Oriolus oriolus

Three-toothed Orchid Neotinea tridentata

Early-purple Orchid Orchis mascula

Heart-leaved Globularia Globularia cordifolia

Karstic flower meadow in late April.

Wild Peony Paeonia officinalis

Lush green Karst woodland.

Scopoli's Longhorn Beetle Cerambyx scopolii

Last week was rather lively at Škocjanski zatok NR too. A beautiful Osprey Pandion haliaetus fishing in the freshwater marsh in front of the visitor's center was certainly the highlight. However other good observations were made, including: Glossy Ibis Plegadis falcinellus, Squacco Heron Ardeola ralloides, Cattle Egret Bubulcus ibis, Curlew Sandpiper Calidris ferruginea, Little Stint Calidris minutus and Zitting Cisticola Cisticola juncidis. Successfull nesting of the Greylag Geese Anser anser was confirmed (for the second consecutive year) when a pair with 6 ducklings was observed. 

Today the first returning Little Terns Sternula albifrons were observed in the lagoon, along with about 80 Common Terns Sterna hirundo, while a Grasshopper Warbler Locustella naevia was singing in the bushes along the reserve's trail.

Osprey Pandion haliaetus

Glossy Ibis Plegadis falcinellus

Greylag Goose Anser anser

Spring in Karst & Istria

In the last few weeks we've been quite busy with various fieldwork, but were of course happy to spend a lot of our "working time" outdoors. Spring is now really in its full splendor: woodlands are lush green, flowers bloom everywhere and many of the "classical" summer migrants (birds) have already returned. We had different censuses to carry on, both in the Karst (on dry grassland) and in the Slovenian Istria (farmland areas), as well as the regular work at Škocjanski zatok NR.

In the Karst the iconic migrants like Cuckoo Cuculus canorus, Hoopoe Upupa epops, Wryneck Jynx torquilla and Scops Owl Otus scops are all back. A few days ago we observed again our local pair of Short-toed Eagles Circaetus gallicus, as well as a migrant Black Kite Milvus migrans (a rather scarce bird in Slovenia) and the first returning Red-footed Falcon Falco vespertinus.
Among butterflies certainly the Southern Festoon Zerynthia polyxena steals the show, although many other species are available at the moment, including the first Green Hairstreaks Callophrys rubi and Weaver's Fritillaries Boloria (Clossiana) dia.

Wryneck Jynx torquilla

Southern Festoon Zerynthia polyxena

Green Hairstreak Callophrys rubi

Weaver's Fritillaries Boloria (Clossiana) dia

Flowers now dominate the scene; mostly on open meadows, although some interesting species can still be found in the now increasingly shadier forests. In a small woodland near Divača we came across a group of ten Pale-flowered Orchids Orchis pallens in fine bloom. This is a rather scarce and localised species in Slovenia that favours light woodland and is among the first orchids to emerge in spring.

Pale-flowered Orchid Orchis pallens

In the forest, woodpecker activity has somehow slowed down as most of the birds are now incubating. However we are still following the breeding of Black Woodpecker Dryocopus martius and Middle Spotted Woodpecker Dendrocopos medius close to home. This year we also decided to follow the movements of a local pair of Black Storks Ciconia nigra (a very rare breeder in western Slovenia) in the hope of finding a nest and confirm the breeding. So far we have observed the pair a few times, but we still need to narrow down our research.

Black Woodpecker Dryocopus martius

Beech Fagus sylvatica

Forests turning green.

Monitoring the Black Stork Ciconia nigra.

The karstic flora on dry grasslands is now dominated by the blue and yellow colours of Globularias and different Fabaceae, plus the purple spots of Green-winged Orchids Anacamptis morio - the commonest orchid of all. Some grazed/mowed meadows in the Karst are so full with wildflowers that is hard to walk on them without trampling on the orchids! Among the most interesting species at the moment there's also the scarce Slender-leaved Fritillary Fritillaria orientalis (in Slovenia only found in the Karst) as well as carpets of Poet's Narcissus Narcissus poeticus.

A bird census earlier last week, on some dry limestone grasslands also produced 4 Tawny Pipits Anthus campestris (a rare and localised breeding bird in Slovenia), along the commoner, but fast-declining Skylarks Alauda arvensis and Linnets Carduelis cannabina. 

Slender-leaved Fritillary Fritillaria orientalis

Common Globularia Globularia punctata & Green-winged Orchid Anacamptis morio

Common Globularia Globularia punctata

Green-winged Orchid Anacamptis morio

Poet's Narcissus Narcissus poeticus subsp. radiiflorus

Spring pasture in the Karst.

Tawny Pipit Anthus campestris

Skylark Alauda arvensis

Dry karstic grassland in SW Slovenia with Trieste in the background.

Some days ago we also made a quick afternoon excursion to the "High Karst" of the Javorniki mountains. Given the limited amount of time spent there we were very successfull as we heard & observed two spontaneous-drumming White-backed Woodpeckers Dendrocopos leucotos, close to the place where we carried out the species' census two weeks ago. In the evening we also heard singing Tengmalm's Owl Aegolius funereus and Pygmy Owl Glaucidium passerinum, as well as observed/heard up to 5 Ural Owls Strix uralensis.

Ural Owl Strix uralensis

Recently quite a lot of time was also spent in Istria, around the Slovene coast. Istria has a sub-Mediterranean climate and spring there is usually well in advance if compared to the rest of Slovenia. During a bird census in the farmland areas of Sečovlje and Strunjan we enjoyed several interesting birds, as well as plants and butterflies. Two migrant Hoopoes Upupa epops were feeding on a grass-covered path and showed pretty well for quite a while. Up to 12 singing Wrynecks Jynx torquilla were also nice to hear & see, as well as several Nightingales Luscinia megarhynchos, a Zitting Cisticola Cisticola juncidis, a Purple Heron Ardea purpurea and several Sardinian Warblers Sylvia melanocephala, not to mention the tens of Cirl Buntings Emberiza cirlus and Corn Buntings Emberiza calandra. 

Hoopoe Upupa epops

Wryneck Jynx torquilla

Sardinian Warbler Sylvia melanocephala

Nightingale Luscinia megarhynchos

Corn Bunting Emberiza calandra pretending to be a Reed Bunting E. schoeniclus!

House Martins Delichon urbicum collecting mud for the nests.

Among plants, the highlight at Sečovlje was the very rare Roman Hyacinth Bellevalia romana, a Mediterranean species known to grow at just a few sites in Slovenia. The woodland edges were already full of Lady Orchids Orchis purpurea, while among butterflies the most interesting find was the beautiful Green-underside Blue Glaucopsyche alexis, typical of this time of the year. Later we also recorded the latter in our garden.

Roman Hyacinth Bellevalia romana

Lady Orchid Orchis purpurea

Green-underside Blue Glaucopsyche alexis

Fresh leaves of Downy Oak Quercus pubescens

Meanwhile spring migration is kicking in at Škocjanski zatok NR too, with lots of migrants around in the past week. Among the most interesting observation are certainly 2 Red-rumped Swallows Cecropis daurica (rare migrant), 1 Whimbrel Numenius phaeopus (scarce migrant), 2 Avocets Recurvirostra avosetta (scarce visitor at the reserve), 1 Spoonbill Platalea leucorodia, 2 Little Crakes Porzana parva and up to 4 Purple Herons Ardea purpurea (one pair bred at the reserve for 2 consecutive years... fingers crossed!). Common Terns Sterna hirundo have also returned in good numbers like every year and are preparing to nest at their colony in the lagoon. 

Avocet Recurvirostra avosetta

Purple Heron Ardea purpurea

Little Crake Porzana parva

Ashy-headed Wagtail Motacilla flava cinereocapilla

Common Tern Sterna hirundo