On the 21st, a Eurasian Hobby was at Kenfig Pool, along with a Lesser Whitethroat, eleven Common Whitethroat, a good count of 79 Willow Warblers and 100 Barn Swallow. The Ring-billed Gull was at Lamby Lake and a Yellow Wagtail and two Grasshopper Warblers were in Maesteg. Eight Dunlin and six Common Sandpiper were at Ogmore Estuary and a further six Dunlin were at Aberthaw Marsh. The Spotted Sandpiper was at Lisvane Reservoir and the Little Gull and two Common Terns were in Cardiff Bay. A much nicer day on the 22nd produced five Whimbrel at Kenfig Pool and a Lesser Whitethroat in Cardiff. A further two Lesser Whitethroat were at Aberthaw Marsh and a Grey Plover and ten Whimbrel were at Ogmore Estuary. Eleven Common Redstart and a male Ring Ouzel were in Maesteg. On the 23rd, a female Marsh Harrier was in Maesteg, while a female Merlin, Northern Gannet, Sandwich Tern and Northern Fulmar were at Sker and a Grasshopper Warbler was at Kenfig Pool. A Jack Snipe was at Oxwich Marsh and 23 Whimbrel were at Blackpill. The Ring-billed Gull was at Lamby Lake and a Garden Warbler, Tree Pipit and Common Redstart were at Gwaelod-y-Garth, Cardiff. On the 24th, the adult Little Gull was again in Cardiff Bay, along with six Gadwall, an Arctic Skua and four Sandwich Terns, a Whinchat was in Maesteg and seven Sedge Warbler, 49 Whimbrel, six Common Sandpiper and fourteen Blackcap were at Kenfig Pool. The Spotted Sandpiper was at Lisvane Reservoir and the Ring-billed Gull was at Lamby Lake, while two Common Swift were in Central Cardiff. A Little Tern was at Aberthaw Marsh, another Whinchat was at Llanrhidian Marsh and a Green Sandpiper was at Ogmore Estuary. The 25th produced two Common Swift, a Gadwall and 44 Common Whitethroat at Kenfig Pool, while Sker had a Great Northern Diver, Common Guillemot, Sandwich Tern and four Common Scoter. Seven Grasshopper Warbler were in Maesteg and a Wood Warbler was in the Swansea Valley. Twenty one Purple Sandpiper were at Ogmore Estuary, another two Common Swift were at Tyn-y-Caeau Farm, the Spotted Sandpiper was at Lisvane Reservoir and a Common Cuckoo was near Caerphilly. A lovely day on the 26th saw a stunning male Whinchat at Kenfig Pool, along with a Grasshopper Warbler and a Northern Gannet was off Kenfig Sands. Two Common Cuckoo, a Tree Pipit, Common Redstart, a Garden Warbler and a pair of Common Crossbill were in the Caerphilly area. The Ring-billed Gull was at Lamby Lake, along with a Eurasian Hobby and a Lesser Whitethroat was at Cardiff Bay. A Pied Flycatcher and a Common Cuckoo were at Felindre, Swansea. On the 27th, the first Black-winged Stilt for Glamorgan flew east over Kenfig Pool for three lucky observers, but sadly it could not be relocated despite extensive searching. Also present there were a forty Sedge Warblers; the highest spring count for many years, 150 Barn Swallow, a Grasshopper Warbler and ten Dunlin. A Little Tern, three Arctic Terns, a Short-eared Owl and two Yellow Wagtails were at Cardiff Bay and Common Swifts were widespread in small numbers. The Ring-billed Gull was again at Lamby Lake, where there was also a Ring Ouzel and a Wood Warbler was singing at Norton Woods, Ogmore Estuary.
A Curlew Sandpiper was at Oxwich Bay and a Whinchat and two Common Greenshank were new in at Llanilid. The 28th saw the Black-winged Stilt reappeared, along with fifty Common Swift at Kenfig Pool, seven Pale-bellied Brent Geese, a Little Tern and seven Sandwich Terns were at Blackpill, five Common Redstart and two Wood Warbler at Ogmore Forest and the Spotted Sandpiper is now in full breeding plumage at Lisvane Reservoir. An Osprey, Great Northern Diver, three Arctic Terns and a Common Cuckoo were at Cardiff Bay. A very cool day on the 29th produced a Lesser Whitethroat at Kenfig Pool in the morning and the Black-winged Stilt returned to the reserve in the afternoon, along with fifty Whimbrel and five hundred Barn Swallows. The month ended with the Black-winged Stilt showing superbly on the east pool shore and eight Sanderling and four Common Shelduck on the sands. Five Purple Sandpipers were still at Ogmore-by-Sea.