Will and I met up at 6am start for our Rawcliffe Moss ringing session today. We set our usual quota of nets, some that might catch warblers, and yet other nets in finch feeding spots. We didn’t get too many species but found several of this year’s targets with more Goldfinches and Whitethroats to add to those already caught this year.
In all we processed 42 birds, 31 new and 11 recaptures. New birds: 12 Goldfinch (11 juveniles, 1 adult), 10 Whitethroat (9 juveniles, 1 adult), 4 Willow Warbler (3 adults, 1 juvenile), 3 Blackcap and 2 Dunnock. Recaptures: 7 Goldfinch, 2 Sedge Warbler and 2 Whitethroat.
A quick check of our Goldfinch total for June/July reveals 59 individuals, 53 juvenile birds of the year and 6 adults; this is a healthy proportion of youngsters which points to the continuing success of this species and a good breeding season, as yet only part way through. In comparison, the 43 Whitethroats caught in June/July comprise 9 adults and 34 juveniles, healthy enough proportions after a slow start.
In absolute contrast to the latter two species, the age ratios of 23 Willow Warblers captured here in June/July are reversed with 18 adults but only 5 juveniles. This is a fairly small sample on which to base any conclusions but does seem to bear out field observations and a general impression of a poor breeding year for Willow Warblers.
We continue to catch good numbers of Goldfinch because in July we already employ niger feeders in the plantation, where the Goldfinches took a week or so to find new feeders but are now literally all over them. As seed forms on their natural foods it will be interesting to see how our feeders perform.
Our birding morning proved fairly uneventful with the usual fare and as yet no sign of visible migration but possibly the beginnings of a Swallow roost somewhere in the area: Sightings: 2 Kestrel, 1 Great-spotted Woodpecker, 18 Tree Sparrow, 70+ Swallow, 3 Buzzard, 1 Reed Bunting, 5 Skylark, 2 Yellowhammer and a Little Owl on a Big Post.