Recent Reports P. F. Bonbam These Are Largely Unchecked Reports, Not Authenticated Records the Previous Summary {Brit
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Recent reports P. F. Bonbam These are largely unchecked reports, not authenticated records The previous summary {Brit. Birds, 65: 267-268) covered most of the rarities and scarce migrants in March. Here we deal with the departure of certain winter visitors and the arrival of spring migrants in that month, and with all reports for April. After a cool, wet start to March, high pressure set in over the Baltic and persisted from 14th to 25th. This brought mainly light southerlies and a series of exceptionally warm days from 15 th to 21st, afternoon temperatures of 65°-7o°F being recorded daily in the south-east. Many summer visitors arrived during this period, but it was not to last and April was a month of cool, windy, unsettled weather dominated by deep depressions until nth and by a very large anticyclone to the west of the British Isles from 12th to 28th. On 29th-3oth a slow-moving shallow depression coincided with a large increase in the numbers of certain summer migrants. DIVERS, SHEARWATERS, GANNETS, SKUAS, GULLS AND AUKS In Cornwall, maxima of 20 Great Northern Divers Gavia immer were recorded in Mount's Bay on 5 th March and off Looe on 7th, and up-Channel passage of Black- throated Divers G. arctica at Dungeness (Kent) reached the unusually high total of }4 on 26th April. The regular spring movements of Manx Shearwaters Puffinus puffinus off St Ives (Cornwall) began about 5 th March and up to 240 per hour were reported during that month, but on 8th April these numbers were completely over- shadowed by a total of 7,860 in only two hours. (On the same seawatch, 160 Fulmars Fulmarus glacialis, 500 Gannets Sula bassana, 740 Kittiwakes Rissa tridactyla and 800 auks were also counted.) Smaller numbers of Manx Shearwaters were recorded at several other western headlands during March and April, but nine off the Calf of Man on 26th March were very early for that area. A Sooty Shear- water P. griseus passed Ilfracombe (Devon) on 5 th April and two Cory's Shear- waters Calonctris diomedea were seen at Dungeness on 16th. Among many reports of Gannets away from their breeding stations were two unusual ones: four headed north over Carlton (Nottinghamshire) on 6th April and an adult was seen on the 'Scrape' at Minsmere (Suffolk) on 24th. The first Great Skua Stercorarius skua reported during March appeared off Hartle pool (Co. Durham) on 11th; then during the last week there were scattered sightings of up to three at several localities. In April the largest movements were noted at Portland (Dorset), especially during 4th-8th when 43 were recorded; at most other seawatching stations there were very few indeed. The earliest Arctic Skuas S. parasiticus were singles off Brean Down (Somerset) and Ilfracombe on 27th March; there was then a gap in the reports until mid-April when two were seen in Shetland. After 19th April Arctic Skuas were more widespread, and the largest total to our knowledge was 53 up-Channel at Birling Gap (Sussex) on 30th. On this last date three Pomarine Skuas S. pomarinus were seen at Portland and one at Ilfracombe. There were no reports of the really rare gulls. In England south of the Tees, however, there were at least 20 Glaucous Gulls Icarus hyperboreus and 16 Iceland Gulls L. glaucoides, and ten Mediterranean Gulls L. melanocephalus were scattered between Northumberland and Cornwall. Little Gulls L. minutus were reported from some 20 localities in March and from rather more in April, by far the heaviest passage being 204 (152 adults, 52 immatures) south in two hours at Freshfield (Lancashire) on 25th March. In Northumberland single Little Auks Plautus alle were found dead at Chevington on 5 th March and at Holy Island on 7th, and the latest in Shetland was seen at Hascosay on 14th, while one stayed at Marazion (Cornwall) from 21st February to 16th March. A Black Guillemot Cepphus grylle was reported at St Ives on 26th March. 311 3I2 Recent reports HERONS TO SWANS An adult Purple Heron Ardea purpurea at Church Norton (Sussex) on 12th April and a Little Bittern Ixobrychus minutus at Lodmoor and Radipole Lake (Dorset) from 22nd to 25th were followed by immature Little Egrets Egretta gar^etta in the Lea valley (Essex/Middlesex) on 2C)th-30th and at Cley (Norfolk)—possibly the same one—from the evening of 30th until 7th May. There was a White Stork Ciconia ciconia near Banchory (Kincardineshire) on 16th April and an unusual record of five flying north over Polegate (Sussex) on 25th. Spoonbills Platalea kucorodia stayed at Arne (Dorset) from 16th to 20th April and at Minsmere from 30th April until 2nd May. Surface-feeding ducks in April included a Green-winged Teal Anas crecca carolinensis at Lightshaw Hall Flash (Lancashire) on 19th and 20th, a Blue-winged Teal A. discors at Minsmere from 27th to 29th and an American Wigeon A. americana at Loch of Auchlossan (Aberdeenshire) on 1st. (Arrivals of Garganey A. querquedula and other common migrants are dealt with in a separate section on pages 314-316.) The Red-crested Pochard Netta rufina was last included in these sum maries some months ago {Brit. Birds, 65: 89-90, covering September 1971-January 1972); since then this species has occurred in 17 counties west to Glamorgan and north to the Tees and the total number of individuals exceeds 40, even allowing for some duplication between near-by localities. There seem to have been slightly more females than males. Some were said to have been very tame, especially in the west, but many others were as wary as other diving ducks and the evidence seems to point to a sizable influx from the Continent last autumn, birds subsequently wandering over the Midlands and East Anglia. In contrast, only four Ferruginous Ducks Aythya nyroca were reported, two in January (Brit. Birds, 65: 183), one in Derbyshire in February and one in Hertfordshire in March. Ring-necked Ducks A. collaris were found in April at Cottington (Kent) on 9th and at Luton Hoo Park (Bedford shire) on 16th, the latter staying until 7th May. An adult drake Surf Scoter Melanitta perspicillata remained at Penychain, Pwllheli (Caernarvonshire), from 18th to 23 rd April and another was reported in Co. Kerry on 22nd-23rd; and, to complete a formidable list of rare ducks newly arrived in April, there were two more drake King Eiders Somateria spectabilis, at Coquet Island (Northumberland) on 1st and nth and at Portstewart (Co. Londonderry) on 2nd and 3rd. Two Smews Mergus albellus in Shetland in mid-March, and singles on the Rivers Don and Ythan (Aber deenshire) on 31st March and nth April respectively, were unusually far north and also very late, but the latest of all was one at Blagdon Reservoir (Somerset) until 21st April. Ninety Barnacle Geese Branta leucopsis at Spurn (Yorkshire) on 26th April were a record number for the county, and a flock of 66 Bewick's Swans Cygnus bemickii heading north-east over the Calf of Man on 20th March was quite unprecedented there. RAPTORS, CRAKES AND WADERS To the series of records of Red Kites Milvus mihus in March (Brit. Birds, 65: 268) should be added one found dead at Wells (Norfolk) on 23rd. Three April reports— at Banbury (Oxfordshire) and at Wellesbourne and Whitnash (both Warwickshire) —very probably concerned one individual. A Honey Buzzard Pernis apivorus came in from the sea at Stoke Point (Devon) on 22nd April, and a female Red-footed Falcon Falco vespertinus was seen at Southport (Lancashire) on 30th. A very early Osprey Pandion haliaetus was flying north over the River Taw near Eggesford (Devon) on nth March; later records of passage migrants came from Sevenoaks (Kent) on 26th March, Bough Beech Reservoir (also Kent) on 31st, Acton Burnell (Shropshire) on nth April (two), Ruxley (Kent) on 27th and Eshaness (Shetland) on 29th. At Loch Garten (Inverness-shire) the male returned to the eyrie on 31st March and the female on 8th April; the first egg was laid on 21st. Apart from the one in Norfolk in March (Brit. Birds, 65: 268), the only reports of Recent reports 313 Spotted Crakes Peruana por^ana were of singles at Cassiobury Park, Watford (Hert fordshire) from mid-February to early April, at Maple Cross (Hertfordshire/ Middlesex) on 5 th March, and at Ynys-hir (Cardiganshire) in late Match and early April. The scarcer migrant waders were so few that all reports may be listed as follows: single Kentish Plovers Charadrius akxandrinus at Dawlish Warren (Devon) on 7th April, at Sandwich Bay (Kent) on 16th, at Havergate (Suffolk) during 27th-2cjth and at Ferrybridge (Dorset) on 29th-; oth; two Dotterels Eudromias morinellus at Holkham (Norfolk) on 22nd April; a Wood Sandpiper Tringa glareola on the Ouse Washes (Cambridgeshire/Norfolk) on 30th April; a Little Stint Calidris minuta overwintering at Rainham (Essex), singles at Sandwich Bay on 3rd March and at Minsmere on 19th April, and three at Slimbridge (Gloucestershire) on 25th April; two Tem- minck's Stints C, temminckii at Kingsmoor (Somerset) on 23rd March; and a Curlew Sandpiper C.ferrugima at Havergate on 27th April. Up-Channel movement of Bar-tailed Godwits Limosa lapponica at Dungeness reached a remarkable total of 3,853 on 26th April, the same day as the large passage of Black-throated Divers (see above). Some high counts of Black-tailed Godwits L. limosa were 580 at Shotton (Flintshire) on 20th February, 158 inland at Wet Moor (Somerset) on 28th March, 260 on the 'Scrape' at Minsmere on 5th April and 22 unusually far north at Hillwell (Shetland) during 23rd-3oth April.