A three hour walk between Cambuslang and Uddingston this morning was notable for the sheer number of warblers singing. Minimum numbers were: Willow Warbler - 35 36, Blackcap - 18 19, Whitethroat - 10 11, Chiffchaff - 4 5 and Sedge Warbler - 1. Many of these (including all the Whitethroats) were in the scrubby grassland between the new housing estates at Newton Farm and the Clyde. Other good birds were Sand Martins, Swallows and my first House Martin of the year overhead, two separate loafing male Goosanders (their work is mostly done for the season) and a pair of Grey Wagtails, the male singing as the female watched him [amended figures added 30/04/21).