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Female-female pairings in Caspian ternsCONOVER, M. R.The condor (Los Angeles, CA). 1983, Vol 85, Num 3, pp 346-349, issn 0010-5422Article

Female-female pairing and sex ratios in gulls: an histological perspectiveCONOVER, M. R; HUNT, G. L. JR.The Wilson bulletin (Wilson Ornithological Society). 1984, Vol 96, Num 4, pp 619-625, issn 0043-5643Article

Changement de partenaire chez la perdrix rouge (Alectoris rufa) = Pairing change in the red-legged partridge (Alectoris rufa)PEPIN, D.Oiseau et la Revue Francaise d'Ornithologie. 1984, Vol 54, Num 4, pp 293-304, issn 0030-1531Article

THE INFLUENCE OF SEPARATION ON THE PAIR BOND IN BUDGERIGARS (MELOPSITTACUS UNDULATUS; AVES, PSITTACIDAE).TRILLMICH F.1976; Z. TIERPSYCHOL.; DTSCH.; DA. 1976; VOL. 41; NO 4; PP. 396-408; ABS. ALLEM.; BIBL. 1/2 P.Article

The logistik equation revisited: the two-sex caseCASTILLO-CHAVEZ, C; WENZHANG HUANG.Mathematical biosciences. 1995, Vol 128, Num 1-2, pp 299-316, issn 0025-5564Article

Pair production via crossed lasersFRIED, H. M.Laser and particle beams (Print). 2002, Vol 20, Num 2, pp 233-236, issn 0263-0346, 4 p.Conference Paper

Models for pair formation in bisexual populationsHADELER, K. P; WALDSTÄTTER, R; WÖRZ-BUSEKROS, A et al.Journal of mathematical biology (Print). 1988, Vol 26, Num 6, pp 635-649, issn 0303-6812Article

Mate guarding in the mallard Anas platyrhynchosGOODBURN, S. F.Ornis Scandinavica. 1984, Vol 15, Num 4, pp 261-265, issn 0030-5693Article

Pairing behavior and pair dissolution by ring-billed gulls during the post-breeding periodFETTEROLF, P. M.The Wilson bulletin (Wilson Ornithological Society). 1984, Vol 96, Num 4, pp 711-714, issn 0043-5643Article

Pair formation in the Mongolian gerbilAGREN, G.Animal behaviour. 1984, Vol 32, Num 2, pp 528-535, issn 0003-3472Article

PAIR-FORMING AND BREEDING BEHAVIOUR OF THE CAPE SHOVELLER AT BARBERSPAN.SKEAD DM.1977; OSTRICH; S. AFR.; DA. 1977; SUPPL. NO. 12; PP. 75-81; BIBL. 17 REF.Article

LE COMPORTEMENT SEXUEL DU RATON LAVEUR (PROCYON LOTOR LOTOR).RICARD L; DORE F.1977; BIOL. DU COMPORT.; FR.; DA. 1977; VOL. 2; NO 3; PP. 239-248; ABS. ANGL.; BIBL. 11 REF.Article

FURTHER NOTE ON THE PAIR FORMATION OF THE COMMON MYNA, ACRIDO-THERES TRISTIS.SENGUPTA S.1975; J. BOMBAY NAT. HIST. SOC.; INDIA; DA. 1975 PARU 1976; VOL. 72; NO 3; PP. 856-857Article

FACTORS AFFECTING THE FORMATION AND MAINTENANCE OF PAIR BONDS IN THE ZEBRA FINCH, TAENIOPYGIA GUTTATASILCOX AP; EVANS SM.1982; ANIM. BEHAV.; ISSN 0003-3472; GBR; DA. 1982; VOL. 30; NO 4; PP. 1237-1243; BIBL. 18 REF.Article

MATE GUARDING AND GALLIVANTING BY MALE HOARY MARMOTS (MARMOTA CALIGATA)BARASH DP.1981; BEHAV. ECOL. SOCIOBIOL.; ISSN 0340-5443; DEU; DA. 1981; VOL. 9; NO 3; PP. 187-193; BIBL. 15 REF.Article

COURTSHIP AND PAIR FORMATION IN THE GREAT EGRET.WIESE JH.1976; ; AUK; U.S.A.; DA. 1976; VOL. 93; NO 4; PP. 709-724; BIBL. 19 REF.Article

WOOD DUCK DISPLAYS AND PAIRING CHRONOLOGYSCHERPELZ ARMBRUSTER J.1982; ; AUK; ISSN 0004-8038; USA; DA. 1982; VOL. 99; NO 1; PP. 116-122; BIBL. 21 REF.Article

PAIR FORMATION AND REPRODUCTIVE OUTPUT IN DOMESTIC PIGEONSKLINT T; ENQUIST M.1981; BEHAV. PROCESSES; ISSN 0376-6357; NLD; DA. 1981; VOL. 6; NO 1; PP. 57-62; BIBL. 6 REF.Article

A POSSIBLE ROLE FOR GENERALLY ADAPTIVE FEATURES IN MATE SELECTION AND SEXUAL STIMULATIONLOTT DF.1979; PSYCHOL. REP.; USA; DA. 1979; VOL. 45; NO 2; PP. 539-546; BIBL. 17 REF.Article

CHEVAUCHEE NUPTIALE ET ACCOUPLEMENTS CHEZ L'ISOPODE TERRESTRE HELLERIA BREVICORNIS EBNER (TYLIDAE). ANALYSE DES FACTEURS QUI CONTROLENT CES DEUX PHASES DU COMPORTEMENT SEXUEL.MEAD F; GABOURIAUT D.1977; BEHAVIOUR; NLD; DA. 1977; VOL. 63; NO 3-4; PP. 262-280; ABS. ANGL.; BIBL. 1 P. 1/2Article

REPRODUCTION EN CAPTIVITÉ DE L'AIGLE DE BONELLI Aquila fasciata L'ATTACHEMENT ENTRE PARTENAIRES = Breeding in captivity by the Bonelli's Eagle Aquila fasciata with special emphasis on mate attachmentPACTEAU, Christian.Alauda (Dijon). 2014, Vol 82, Num 2, pp 91-104, issn 0002-4619, 14 p.Article

Beam stability in strongly magnetized pair plasmas. Part 2ROWE, G. W; ROWE, E. T.Journal of plasma physics. 1999, Vol 62, pp 441-448, issn 0022-3778, 4Article

One Norwegian territory of the Marsh Tit Parus palustris during 35 yearsHAFTORN, S.Ibis (London. 1859). 1997, Vol 139, Num 2, pp 379-381, issn 0019-1019Article

Pair-bond dissolution in MallardsLOSITO, M. P; BALDASSARRE, G. A.The Auk. 1996, Vol 113, Num 3, pp 692-695, issn 0004-8038Article