Published in Scopus, in 1985, in volume 9, pages 43-49
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/42024015,60,60)
Published in Scopus, in 1993, in volume 17, pages 26-31
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43037380,60,60)
Published in Scopus, in 1981, in volume 5, pages 36-38
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/41807957,60,60)
Published in Scopus, in 1991, in volume 14, pages 73-75
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40823428,60,60)
Published in Bull Brit Ornithol Club, in 1961, in volume 81, pages 95-96
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/42024022,60,60)
Published in Scopus, in 1993, in volume 17, pages 19-25
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/41806952,60,60)
Published in Scopus, in 1991, in volume 15, pages 42-43
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/42116172,60,60)
Published in Scopus, in 1985, in volume 9, pages 133-137
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/42116046,60,60)
Published in Scopus, in 1985, in volume 9, pages 53-54
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40815031,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1966, in volume 86, pages 95-96
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/43037376,60,60)
Published in Scopus, in 1981, in volume 5, pages 32-33
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43037379,60,60)
Published in Scopus, in 1981, in volume 5, pages 35-36
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43037433,60,60)
Published in Scopus, in 1981, in volume 5, pages 81-82
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40084841,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1984, in volume 104, pages 24-35
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/40824649,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1978, in volume 98, pages 26-29
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/43037441,60,60)
Published in Scopus, in 1981, in volume 5, pages 85-101
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43037402,60,60)
Published in Scopus, in 1981, in volume 5, pages 54-56
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43056209,60,60)
Published in Scopus, in 1980, in volume 4, pages 22-24
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/41800526,60,60)
Published in Scopus, in 1989, in volume 12, pages 65-68
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43037400,60,60)
Published in Scopus, in 1981, in volume 5, pages 52
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43056225,60,60)
Published in Scopus, in 1980, in volume 4, pages 6-9
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/41807144,60,60)
Published in Scopus, in 1992, in volume 16, pages 14-17
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40814769,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1965, in volume 85, pages 65-66
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/40814789,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1965, in volume 85, pages 81-82
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/41807770,60,60)
Published in Scopus, in 1989, in volume 13, pages 90-96
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40825161,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1981, in volume 101, pages 396-398
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/40027798,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1992, in volume 112, pages 53-55
Created: 2012-12-02, modified: 2012-12-02![](https://www.biodiversitylibrary.org/pagethumb/40028001,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1992, in volume 112, pages 244-247
Created: 2012-12-02, modified: 2012-12-02![](https://www.biodiversitylibrary.org/pagethumb/40027706,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1991, in volume 111, pages 237-239
Created: 2012-12-02, modified: 2012-12-02![](https://www.biodiversitylibrary.org/pagethumb/43037423,60,60)
Published in Scopus, in 1981, in volume 5, pages 71-76
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43056175,60,60)
Published in Scopus, in 1980, in volume 4, pages 64-66
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40416597,60,60)
Published in Bulletin of The British Ornithologists' Club, in 2002, in volume 122, issue 3, pages 222-228
Created: 2015-08-11, modified: 2015-08-11![](https://www.biodiversitylibrary.org/pagethumb/40027403,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1990, in volume 110, pages 222-225
Created: 2012-12-02, modified: 2012-12-02![](https://www.biodiversitylibrary.org/pagethumb/40029314,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1996, in volume 116, pages 225-229
Created: 2012-12-02, modified: 2012-12-02![](https://www.biodiversitylibrary.org/pagethumb/41800518,60,60)
Published in Scopus, in 1988, in volume 11, pages 57-78
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40824543,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1980, in volume 100, pages 194-195
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/41807152,60,60)
Published in Scopus, in 1992, in volume 16, pages 22-28
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40055914,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1983, in volume 103, pages 107-110
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/41800522,60,60)
Published in Scopus, in 1989, in volume 12, pages 61-64
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40027259,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1990, in volume 110, pages 90-93
Created: 2012-12-02, modified: 2012-12-02![](https://www.biodiversitylibrary.org/pagethumb/40085162,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1985, in volume 105, issue 4, pages 141-143
Created: 2012-12-03, modified: 2015-04-30![](https://www.biodiversitylibrary.org/pagethumb/40825290,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1982, in volume 102, issue 3, pages 89-92
Created: 2012-12-03, modified: 2015-06-14![](https://www.biodiversitylibrary.org/pagethumb/40825164,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1981, in volume 101, pages 399-403
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/42116143,60,60)
Published in Scopus, in 1985, in volume 9, pages 108-110
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/40825144,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1981, in volume 101, pages 379-383
Created: 2012-12-03, modified: 2012-12-03![](https://www.biodiversitylibrary.org/pagethumb/41806934,60,60)
Published in Scopus, in 1991, in volume 15, pages 24-29
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/43037366,60,60)
Published in Scopus, in 1981, in volume 5, pages 22-27
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/41807148,60,60)
Published in Scopus, in 1992, in volume 16, pages 18-21
Created: 2014-03-20, modified: 2014-03-20![](https://www.biodiversitylibrary.org/pagethumb/33354145,60,60)
Published in Rhodora, in 1989, in volume 91, issue 867, pages 225-234
Created: 2016-07-19, modified: 2016-07-19![](https://www.biodiversitylibrary.org/pagethumb/40825195,60,60)
Published in Bulletin of The British Ornithologists' Club, in 1982, in volume 102, pages 2-5
Created: 2012-12-03, modified: 2012-12-03