ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00667.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

摘要:

Summary.A systematic account (with field‐notes) of the birds of south‐eastern Nigeria is given, based on a collection of about 350 skins made between 1946 and 1949, mainly in the neighbourhood of Owerri. The range of several species is extended by new Nigerian records and the distribution of the races of other species more clearly defi

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00668.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00669.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

摘要:

SUMMARY.1The species of eagles occurring in Embu district are detailed, with general notes on the methods and scope of the study.2The vegetation and climate of Embu district are described, and their effect upon eagles is discussed.3Population and inter‐relations. The actual population of eagles and of the Secretary Bird in an area of approximately 146 sq. miles is given and their remarkable local concentrations are described. The inter‐relations of the various species are discussed from the points of view of territorial agressiveness and competition for prey.4Detailed accounts are given of the breeding biology ofSagittarius serpentarius, Aquila verreauxi, A. wahlbergi, Hieraaëtus spilogaster, Polmaëtus bellicosus, Stephano‐aëtus coronatusandCircaëtus cinereus, and some information forTerathopius ecaudatus, Circaëtus pectoralis, andAquila rapax, Hieraaëtus ayresi, Lophaëtus occipitalis, andCuncuma vocifer. The headings for each species include: “Nests and nest‐building”, “Incubation period”, “Fledging period” (with special attention to food), and “Post‐fledging period”.5The following special aspects of breeding behaviour are described and discussed: (1) Display, (2) Use of green branches, (3) Breeding seasons, (4) Breeding

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00670.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

摘要:

SUMMARY.Some aspects of the aggressive behaviour of the Little Ringed, Kentish and Ringed Plovers are described and compared, including fighting, chasing, threat‐display, butterfly display‐flight and displacement‐activities. The Little Ringed has a special flight‐threat‐display. The pre‐coitional display of the Ringed and Little Ringed is outlined because of its identity with their most intense threat‐display and possible connection with intra‐generic competition. It is suggested that the intra‐generic territorial adjustments that exist may have reproductive as well as ecological significance. Finally the distraction‐displays and other predator‐reactions are very briefly comp

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00671.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

摘要:

SUMMARY.1The first part of the journey described covers the whole of the western seaboard of Morocco from Tangier to within 75 km. of the Oued Draa. The High Atlas was crossed from south to north by another pass from that used in 1951, and a visit paid later to the cedar forests of the Middle Atlas.2The marshes south of Cap Blanc were visited and the birds seen are described.3Bald Ibises were discovered in the area of Cap Cantin where there are imposing sea‐cliffs, the bird‐life of which is listed.4Mogador island was visited and thirteen species identified.5The Argan forests south of Mogador yielded 32 species of birds.6The estuary of the Oued Sous was explored on four occasions. Its character has changed much since Lynes' visit in 1925. A Desert Warbler was identified which Lynes noted as absent. Bald Ibises were again seen.7The Oued Massa was visited and a Marmora's Warbler seen here among other species.8The bird‐life of Goulimine and surrounding deserts is described for the first time. At least 50 species were identified. Five species of chats were found here and early dates of breeding ofOe. moestaandOe. desertiare recorded. Considerable extension of range is claimed for the Black ChatOe. leucuraand the White‐crowned Black ChatOe. leucopyga, the latter some hundreds of kilometres westwards.9A breeding ground of Seebohm's WheatearOenanthe seebohmion a high plateau of the Middle Atlas was visited.10A rare lark resemblingChersophilus dupontibut strikingly pale was seen at 6100 ft. in the Middle Atlas.11Dates when passage migrants were seen are noted throughout t

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00672.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00673.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00674.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00675.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0019-1019    

DOI:10.1111/j.1474-919X.1953.tb00676.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY