These two pics were taken three years ago. Aging of this species is not difficult, we can judge age from black-band on breast, Tertials, tip of primaries, crest and abundance of fat. However many time I’m torn between the ages. sexing in winter is so difficult but there are little difference in primary and crest. Situation that in hand, maybe we can judge sex more easily.
タゲリ第一回冬羽 (Vanellus vanellus) 1st winter Northern Lapwing 131208 japan
The call of Northern Lapwing like "myu- myu-" or "ryu- ryu-" is so unique, and some congeners share same call e.g. Spot-breasted Lapwing in Africa. Vanellus has four or more group of call-type I think. Please hear the call of some species of Vanellus in web. I wonder that the differences of calls come from minor differences of morphological structures.
タゲリ (Vanellus vanellus) Northern Lapwing 151227 japan