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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 31 2229 2025 627 518 96 5293

Nicholas E. Collias publications per year

The chart shows the history of publications by Nicholas E. Collias between 1950 and 2016, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Nicholas E. Collias published across 67 years, from 1950 to 2016, averaging 1.3 papers a year. Output peaked at 16 publications in 1984. 1 of the 87 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1950 to 2016. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 1984. 1950: 2 publications 1951: 1 publication 1952: 1 publication 1953: 2 publications 1954: 0 publications 1955: 1 publication 1956: 2 publications 1957: 1 publication 1958: 1 publication 1959: 2 publications 1960: 1 publication 1961: 2 publications 1962: 3 publications 1963: 1 publication 1964: 4 publications 1965: 1 publication 1966: 2 publications 1967: 2 publications 1968: 1 publication 1969: 3 publications 1970: 1 publication 1971: 6 publications 1972: 0 publications 1973: 2 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 2 publications 1978: 4 publications 1979: 2 publications 1980: 1 publication 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 16 publications 1985: 0 publications 1986: 2 publications 1987: 2 publications 1988: 1 publication 1989: 1 publication 1990: 1 publication 1991: 1 publication 1992: 0 publications 1993: 0 publications 1994: 1 publication 1995: 0 publications 1996: 1 publication 1997: 1 publication 1998: 1 publication 1999: 0 publications 2000: 2 publications 2001: 0 publications 2002: 1 publication 2003: 0 publications 2004: 1 publication 2005: 0 publications 2006: 0 publications 2007: 1 publication 2008: 2 publications 2009: 0 publications 2010: 0 publications 2011: 0 publications 2012: 0 publications 2013: 0 publications 2014: 0 publications 2015: 0 publications 2016: 1 publication
1950 2016

87 publications in total across all disciplines

View publications per year as a table
Nicholas E. Collias: publications per year, 1950 to 2016
Year Publications
1950 2
1951 1
1952 1
1953 2
1954 0
1955 1
1956 2
1957 1
1958 1
1959 2
1960 1
1961 2
1962 3
1963 1
1964 4
1965 1
1966 2
1967 2
1968 1
1969 3
1970 1
1971 6
1972 0
1973 2
1974 0
1975 0
1976 0
1977 2
1978 4
1979 2
1980 1
1981 0
1982 0
1983 0
1984 16
1985 0
1986 2
1987 2
1988 1
1989 1
1990 1
1991 1
1992 0
1993 0
1994 1
1995 0
1996 1
1997 1
1998 1
1999 0
2000 2
2001 0
2002 1
2003 0
2004 1
2005 0
2006 0
2007 1
2008 2
2009 0
2010 0
2011 0
2012 0
2013 0
2014 0
2015 0
2016 1
Total 87
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Nicholas E. Collias publications per year - data summary

  • Nicholas E. Collias, a Animal Science and Veterinary scholar from University of California, Los Angeles, has 87 publications recorded across 67 years, from 1950 to 2016.
  • The oldest publication on record dates to 1950 and the most recent to 2016.
  • The most productive year is 1984, with 16 publications.
  • The least productive years with any output are 1951, 1952, 1955, 1957 and others, with 1 publication each.
  • 24 of the 67 years in the span carry no publications at all (1954, 1972, 1974, 1975 and others).
  • The rate of publication averages 1.3 papers per year over the whole span, or 2.0 per year counting only the 43 years with at least one publication.
  • The last 5 years on the chart (2012-2016) hold 1 publication, 1% of the career total.
  • Split into equal eras - 1950-1972: 40 publications (1.7 per year); 1973-1995: 36 publications (1.6 per year); 1996-2016: 11 publications (0.5 per year).
  • Comparing the opening and closing eras, the overall trend of publication is declining.

Nicholas E. Collias publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Nicholas E. Collias sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 94–98 publications, is where this scientist sits. 29–33 publications: 1 scientist 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29–33 publications 442+

This scientist: 96 publications — 25th percentile

25% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103 96
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99
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Nicholas E. Collias publication distribution in Animal Science and Veterinary in 2026 - data summary

  • The chart plots the publication count of all 3,155 Animal Science and Veterinary scientists ranked by Research.com in 2026, grouped into 84 ranges running from 29–33 to 442+ publications.
  • Nicholas E. Collias, a Animal Science and Veterinary scholar from University of California, Los Angeles, records 96 publications - the 25th percentile of the discipline.
  • 25% of ranked Animal Science and Veterinary scientists score the same or lower than Nicholas E. Collias, and about 75% score higher.
  • The median of the discipline falls in the 139–143 publications range, and Nicholas E. Collias ranks below the median.
  • The most crowded range is 119–123 publications, holding 109 scientists (3% of the field).
  • 47% of the field sits in the lowest quarter of the value range (up to 129–133 publications), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 442 publications or more, 99 scientists in all (3% of the field).

Nicholas E. Collias D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Nicholas E. Collias sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 31 D-Index, is where this scientist sits. 20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 31 D-Index — 30th percentile

30% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158 31
32 143
33 137
34 126
35 134
36 112
37 115
38 105
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
Download as CSV

Nicholas E. Collias D-index placement in Animal Science and Veterinary in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 3,155 Animal Science and Veterinary scientists ranked by Research.com in 2026, grouped into 58 ranges running from 20 to 77+ D-Index.
  • Nicholas E. Collias, a Animal Science and Veterinary scholar from University of California, Los Angeles, records 31 D-Index - the 30th percentile of the discipline.
  • 30% of ranked Animal Science and Veterinary scientists score the same or lower than Nicholas E. Collias, and about 70% score higher.
  • The median of the discipline falls in the 36 D-Index range, and Nicholas E. Collias ranks below the median.
  • The most crowded range is 31 D-Index, holding 158 scientists (5% of the field).
  • 43% of the field sits in the lowest quarter of the value range (up to 34 D-Index), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 77 D-Index or more, 100 scientists in all (3% of the field).

Research.com Recognitions

  • 1977 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1962 - Fellow of John Simon Guggenheim Memorial Foundation

Overview

Nicholas E. Collias is affiliated with the University of California, Los Angeles in the United States. This affiliation situates their research within a major academic institution known for its diverse contributions to science and engineering.

Throughout their career, Collias has been recognized through distinguished awards, including being named a Fellow of the American Association for the Advancement of Science (AAAS) in 1977. Earlier, in 1962, they were also awarded a fellowship by the John Simon Guggenheim Memorial Foundation. These honors denote formal recognition by significant scientific and academic bodies.

The research scope, publication record, and collaboration network of Nicholas E. Collias are not publicly detailed in terms of recent papers, co-authors, or specific venues where work has been published. Additionally, there is no available data on book publications or detailed fields or subfields of study.

Given the absence of listed research topics, it is not possible to specify the scientific themes or main areas of expertise associated with their work from the available data.

Best Publications

  • Nest Building and Bird Behavior

    Nicholas E. Collias;Elsie C. Collias

  • The Analysis of Socialization in Sheep and Goats

    Nicholas E. Collias

  • Aggressive Behavior among Vertebrate Animals

    Unknown

  • Evolution of social organisation and visual communication in the weaver birds (Ploceinae)

    Unknown

  • The Vocal Repertoire of the Red Junglefowl: A Spectrographic Classification and the Code of Communication

    Nicholas E. Collias

  • On the Origin and Evolution of Nest Building by Passerine Birds

    Nicholas E. Collias

  • Social organization of a red junglefowl,Gallus gallus, population related to evolution theory

    Nicholas E. Collias;Elsie C. Collias

  • Statistical Analysis of Factors Which Make for Success in Initial Encounters between Hens

    Unknown

  • Locality fixation, mobility and social organization within an unconfined population of red jungle fowl

    Nicholas E. Collias;Nicholas E. Collias;Elsie C. Collias;Elsie C. Collias;Don Hunsaker;Don Hunsaker;Lory Minning;Lory Minning

  • Modification of the Social Order in Flocks of Hens by the Injection of Testosterone Propionate

    Unknown

  • THE EVOLUTION OF NESTS AND NEST-BUILDING IN BIRDS

    Unknown

  • The Development of Nest-Building Behavior in a Weaverbird

    Elsie C. Collias;Nicholas E. Collias

  • The role of vocalization in the social behaviour of the northern elephant seal

    George A. Bartholomew;Nicholas E. Collias

  • Social Behavior in Animals

    Unknown

  • Social Behavior and Breeding Success in Canada Geese (Branta canadensis) Confined under Semi-Natural Conditions

    Nicholas E. Collias;Laurence R. Jahn

  • THE BEHAVIOUR OF THE WEST AFRICAN VILLAGE WEAVERBIRD

    Nicholas E. Collias;Elsie C. Collias

  • Nest and mate selection in the village weaverbird (Ploceus cucullatus)

    N.E. Collias;J.K. Victoria

  • An Experimental Study of the Mechanisms of Nest Building in a Weaverbird

    Nicholas E. Collias;Elsie C. Collias

  • Anna's Hummingbirds Trained to Select Different Colors in Feeding

    Nicholas E. Collias;Elsie C. Collias

  • Cooperative Breeding Behavior in the White-Browed Sparrow Weaver

    Nicholas E. Collias;Elsie C. Collias

  • Dominant Red Junglefowl (Gallus Gallus) Hens in an Unconfined Flock Rear the Most Young over Their Lifetime

    Nicholas Collias;Elsie Collias;Robert I. Jennrich

  • Evolution of nest-building in the weaverbirds (Ploceidae)

    Richard F. Johnston;Nicholas E. Collias;Elsie C. Collias

  • NEST BUILDING AND NESTING BEHAVIOUR OF THE SOCIABLE WEAVER PHILETAIRUS SOCIUS

    Elsie C. Collias;Nicholas E. Collias

  • Size of Breeding Colony Related to Attraction of Mates in a Tropical Passerine Bird

    Nicholas E. Collias;Elsie C. Collias

  • BREEDING BEHAVIOUR OF THE BLACK-HEADED WEAVERBIRD TEXTOR CUCULLATUS GRAUERI (HARTERT) IN THE BELGIAN CONGO

    Nicholas E. Collias;Elsie C. Collias

  • Engineering aspects of nest building by birds

    Nicholas Collias

  • Nest colour as a factor in nest selection by female village weaverbirds

    Catherine H. Jacobs;Nicholas E. Collias;Jeffrey T. Fujimoto

Frequent Co-Authors

Robert I. Jennrich
Robert I. Jennrich University of California, Los Angeles
George A. Bartholomew
George A. Bartholomew University of California, Los Angeles

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Related Online Degrees & Career Pathways

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