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THE GROUPING OF NOCTURNAL PASSERINE MIGRANTS.BALCOMB R.1977; ; AUK; U.S.A.; DA. 1977; VOL. 94; NO 3; PP. 479-488; BIBL. 19 REF.Article

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EFFECT OF GROUP SIZE ON PARASITISM IN A NATURAL POPULATION OF THE BALTIMORE CHECKERSPOT EUPHYDRYAS PHAETONSTAMP NE.1981; OECOLOGIA; ISSN 0029-8549; DEU; DA. 1981; VOL. 49; NO 2; PP. 201-206; BIBL. 41 REF.Article

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WINTER AGGREGATION OF LEIOLOPISMA GUICHENOTIPOWELL H; HEATWOLE H; HEATWOLE M et al.1978; BRIT. J. HERPETOL.; GBR; DA. 1978; VOL. 5; NO 11; PP. 789-791; BIBL. 4 REF.Article

ETUDE DU ROLE DE L'IMITATION CHEZ LEUCASPIUS DELINEATUS AU COURS DU DEPLACEMENT DES BANCS DANS UN COURANT D'EAUSIL'VA A; SABURENKOV EN.1978; VOPR. IKHTIOL.; S.S.S.R.; DA. 1978; VOL. 18; NO 3; PP. 561-564; BIBL. 13 REF.Article

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ROOSTING BEHAVIOR OF THE PINON JAY IN AUTUMN AND WINTER.BALDA RP; MORRISON ML; BEMENT TR et al.1977; ; AUK; U.S.A.; DA. 1977; VOL. 94; NO 3; PP. 494-504; BIBL. 16 REF.Article

STATISTISCHES PRUEFVERFAHREN DES UNTERMISCHUNGSGRADES VON IM WATT RASTENDEN FLUSSSEESCHWALBEN- UND KUESTENSEESCHWALBEN-SCHWAERMEN (STERNA HIRUNDO L. UND S. PARADISAEA PONT.). = METHODE STATISTIQUE PERMETTANT DE DETERMINER LE DEGRE DE COHABITATION DES VOLEES S.H.L. ET S.P.P.) SUR LA PLAGEBUSSE K.1977; Z. TIERPSYCHOL.; DTSCH.; DA. 1977; VOL. 43; NO 3; PP. 295-303; ABS. ANGL. ESP.; BIBL. 6 REF.Article

AGONISTIC DISPLAY AND SPACING IN THE BLACK-HEADED GULL, LARUS RIDIBUNDUS.HUTSON GD.1977; ANIMAL BEHAV.; G.B.; DA. 1977; VOL. 25; NO 3; PP. 765-773; BIBL. 7 REF.Article

FEEDING ASSOCIATIONS BETWEEN CAPYBARAS HYDROCHOERUS HYDROCHAERIS AND SOME BIRD SPECIESMACDONALD DW.1981; IBIS; ISSN 0019-1019; GBR; DA. 1981; VOL. 123; NO 3; PP. 364-366; H.T. 1; BIBL. 8 REF.Article

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EFFECTS OF CROWDING ON ALCOHOL CONSUMPTION BY RATS. = EFFETS DE L'ENTASSEMENT SUR LA CONSOMMATION D'ALCOOL PAR LE RATHANNON R; DONLON BANTZ K.1975; J. STUD. ALCOHOL; U.S.A.; DA. 1975; VOL. 36; NO 9; PP. 1273-1276; BIBL. 10 REF.Article

OPTIMAL GROUP SIZE IS UNSTABLESIBLY RM.1983; ANIMAL BEHAVIOUR; ISSN 0003-3472; GBR; DA. 1983; VOL. 31; PART. 3; PP. 947-948; BIBL. 2 REF.Article

EGG CLUSTERING AND THE SOUTHERN HEMISPHERE LYCAENIDS: COMMENTS ON A PAPER BY N.E. STAMPKITCHING RL.1981; AM. NAT.; ISSN 0003-0147; USA; DA. 1981; VOL. 118; NO 3; PP. 423-425; BIBL. 5 REF.Article

ASPECTS ZOOGEOGRAPHIQUES DE L'HIVERNAGE EN BANDES D'OISEAUX AU BORD DE LA MER CASPIENNEMOLODOVSKIJ AV.1981; VESTN. ZOOL.; ISSN 0084-5604; UKR; DA. 1981; NO 5; PP. 88-91; BIBL. 3 REF.Article

INDUCED DRAG OF A BIRD FLOCKHIGDON JJL; CORRSIN S.1978; AMER. NATURALIST; USA; DA. 1978; VOL. 112; NO 986; PP. 727-744; BIBL. 22 REF.Article

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UNUSUAL BEHAVIOUR OF PSITTACULA KRAMERI BOREALIS.TESSIER YANDELL J.1975; J. BOMBAY NAT. HIST. SOC.; INDIA; DA. 1975 PARU 1976; VOL. 72; NO 2; PP. 538Article

COLONIAL BREEDING OF THE EARED DOVE (ZENAIDA AURICULATA) IN NORTHEASTERN BRAZILBUCHER EH.1982; BIOTROPICA; ISSN 0006-3606; USA; DA. 1982; VOL. 14; NO 4; PP. 255-261; ABS. SPA; BIBL. 23 REF.Article

FLOCK SIZE AND FEEDING BEHAVIOUR OF MIGRATING WINCHATS SAXICOLA RUBETRADRAULANS D; VAN VESSEM J.1982; IBIS; ISSN 0019-1019; GBR; DA. 1982; VOL. 124; NO 3; PP. 347-351; BIBL. 13 REF.Article

RECRUITMENT AND SOCIALLY-SPECIFIC FLOCKING TENDENCIES OF EASTERN SANDHILL CRANESLOUVORN JR; KIRKPATRICK CM.1982; WILSON BULL. (WILSON ORNITHOL. SOC.); ISSN 0043-5643; USA; DA. 1982; VOL. 94; NO 3; PP. 313-321; BIBL. 21 REF.Article