NAM Verbeek 1966 Plectrophenax nivalis (1) 3 June Snow Buntings, both males and females were present on the day of arrival. The males were heard displaying and chasing other males. They all seem to be paired 4 June The nest box outside our window is being inspected by a female 5 June This morning the female again inspected the nest box going in and out several times. I also noted a pair of birds copulating in the snow. today. The whole thing lasted so short that there may have been no sperm transfer. Afterwards the female took a bath in the snow while the male just hopped around on the snow. 6 June. At 22:05 the female flew 6 times into the nest box with nest material she picked up on the left side of our cab. The male fed on the ground below. After she had brought material 6 times (don't know how long she was building before I noticed her) in one minute they both flew off. 12 June. There are among male Snow Buntings, different types of advertising songs, each male having his own song. There is one bird along Honey Bucket who is different again from all others. This latter male has a very large territory judging from the distribution of his singing posts. 26 June Noticed a male aggressively pulling at the rump feathers a wrig tip (could not determine which). This went on for some 30 sec. after which the male released his grip. At that point the female chased him on foot to about 75 cm. and he flew off.