Life and death on the sand dunes

Yesterday Meidad and I ventured out deep into the desert for fieldwork. We are completing a large-scale project mapping breeding birds for our atlas. We both worked in the Agur Sands NR, which is in fact the very extralimital extension of the Sahara sand belt that stretches across Africa into Sinai and the western Negev.

The habitat includes mobile sand dunes dotted with some bushes, and the valley floors are coated with a layer of Loess soil where there's a bit more plant productivity. Admittedly, sand dunes aren't the richest desert habitat for breeding birds in Israel. However, it is an important habitat for some threatened breeding species (more in these below), especially after good winter rains, as we had this past winter. Sandy habitats are certainly a biodiversity hotspot for psammophile organisms such as rodents and reptiles. Walking across the pure sand dunes in the early morning, it is always impressive to see how much nocturnal activity there was - every afternoon the wind swipes the sand dunes clean. Don't know what happened to my phone camera, however I quite like this monochromatic effect... In this photo there are tracks of Crowned Leafnose Snake (Lytorhynchus diadema), several gerbiles, jerboa and many beetles.

Nidua Fringe-fingered Lizard (Acanthodactylus scutellatus) - must be a pregnant female:

Any guesses what this is?

The most dominant breeding bird was Mediterranean Short-toed Lark. These sandy habitats are very important for this threatened species in Israel, especially when plant productivity is relatively high following good winter rainfall. Indeed, I had them in very good density, and their amazing song filled the sky - they are fantastic mimics. Here this male includes Crested Lark in his song, while another flies by calling:

They were busy breeding, including feeding recently-fledged young:

These are three youngsters:

I was alerted by a local Brown-necked Raven about the presence of a raptor - the raven was harassing a migrant Montagu's Harrier that had just caught prey, most likely a recently-fledged Mediterranean Short-toed Lark - life for one, death for another.

Another montys, a female, cruising over the sand dunes hoping to snatch some breakfast before another day of migration:

This certainly isn't prime habitat for terrestrial migrants, but migration here never stops and migrants can be found sheltering even in unhospitable habitats. Migration was in full swing and very evident both up in the air and on the ground. I flushed a Corn Crake off a random sand dune, my first for the season - good to see one alive and well...

There was really good movement of aerial insectivores - swifts, swallows and bee-eaters.

Pallid Swifts

Barn Swallow

Oh, those beautiful European Bee-eaters. Which version do you prefer - the first with all individuals aligned?

Or the second version with one individuals preening and facing the opposite direction?

Buntings, pipits, chats, warblers - so very good. I also had six Pale Rockfinches flying through. 

Eastern Orphean Warbler

Ortolan Bunting

On the way out I surprised a large Desert Monitor sunning itself on my track - male by the contrating colouration:

eBird checklist here.

Unfortunately, the way out was longer than expected as I got stuck trying to climb a track climbing up an extremely tall sand dune. After a couple of hours of failed attempts to free ourselves from the sand, we received help from a passing convoy of friendly ATV'ers. Thank you Yossi et al!

Just another day in the office

This morning I went out to get some fieldwork done in the northern Negev. We're working there with INPA at a new nature reserve, Loess Plains NR, mapping breeding birds. Most of the reserve is pretty flat Loess plains. My section this morning flanked the Besor River, the main watercourse of the northern Negev, and quite a serious corridor of vegetation in contrast with the barren surroundings. 

I arrived at my section early in the morning, and quickly understood that this morning would be more about migrants than breeding birds. It was a cool and overcast morning after very hot weather yesterday, that must have affected migration. The air was full of birds and bird calls on the move - bee-eaters, hirundines, swifts, pipits, buntings, chats were hopping on tops of bushes - bliss. Down the wadi, the trees were full of birdsong - mainly Eastern Olivaceous Warblers and Turtle Dove. Hundreds of migrant warblers were ticking from the vegetation. Collared Flycatcher, Redstart, Thrush Nightingales, Wryneck - so much good stuff in there. In the distance I spotted a group of falcons hovering over the plains - mixed Red-foots and Lesser Kestrels.

Ortolan

Whinchat

Turtle Dove was present in very high density - there were tens of displaying males parachuting through the air. It was also heartwarming to see many flocks of migrants, some of several tens.

Hundreds of Steppe Buzzards roosted in the reserve by the wadi, especially on the shoulders.

When the air started to heat up they took off, and were joined by other raptors - Lesser Spotted, Short-toed and Booted Eagles, Pallid, Marsh and Montagu's Harriers.

Lesser Spotted Eagle

Booted Eagle

Receiving a warm welcome from the local Brown-necked Ravens:

Lovely 2cy male Montagu's Harrier

After the migrant flocks of European Bee-eaters left, the many breeding pairs became prominent. There was also a pair of Arabian Green Bee-eaters, so beautiful in the soft light.

Then I heard the familiar call of Blue-cheeked Bee-eater. For a few seconds the three species were sat together on the same bush. By the time I picked my camera up the blue-cheeked flew off; later on I relocated it on nearby wires. They have bred in the region in the past - I will follow up.

European (left) and Arabian Green (right) Bee-eaters

Blue-cheeked Bee-eaters

Towards the end a couple of small groups of pelicans went through:

Smaller than the mega flock I had over home on Saturday:

Pelicans migrating over my town yesterday. Commentary by @MartaAcacio
Note the leucistic bird, there were three in this flock @BirdLifeIsrael @SPNI @flywaychampions pic.twitter.com/R9DlPj4nwR

— Yoav Perlman (@yoavperlman) April 17, 2022

What a fantastic morning to be out. Thank you spring.

eBird checklist here.

Back to the hills

After the short Cypriot break, I resumed fieldwork in the Batha hills north of Jerusalem. On Thursday I surveyed some higher-elevation hills. While bird densities were somewhat low, perhaps due to higher levels of anthropogenic disturbance, I did find most expected breeding species including Long-billed Pipit, Cuckoo, many Eastern Black-eared Wheatears and Cretzschmar's bunting. As expected at these higher elevations, there was quite good activity of Woodlark - top quality bird IMO.

That wing pattern

Zoothera Lark!

Also Spectacled Warblers were pretty active and showed nicely, though light was a bit harsh:

On Prickly Thornet (Sarcopoterium spinosum)

With Red Everlasting (Helichrysum sanguineum) bottom right

Despite the near-shrubless habitat, there were hordes of Blackcaps in the low bushes, and Ortolans, mainly on the move but some came down to drink in puddles:

Black-veined White are very common in this habitat:

Pyramidal Orchid is one of the latest-flowering orchids in Israel:

Yesterday in the afternoon I visited Gazelle Valley in Jerusalem with Piki and my brother. We searched without success for a Great Snipe that is still there. Big numbers of swifts were impressive - those ultra-aerobats drinking in the main pond against the sun provided some photographic opportunities that I barely grasped:

Gazelle Valley eBird checklist here.

Today was super-productive at my local patch and at home. I had a Little Bittern surprise me in the garden while hanging up laundry, and a Red-footed Falcon flew over.  An early morning visit to my patch, Nahal Ekron (see checklist here) produced the goods - Little and Spotted Crake, Little Bittern and Barred Warbler on a fantastic Mulberry tree that also hosted 2 Golden Orioles.