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Sick, Helmut
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1
, In:

Ornitologia Brasileira : [uma introdução] / Helmut Sick. ..:

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Sick, Helmut ; Barruel, Paul - 2.a ed. . , 1986
Copies:  Zentrale:Magazin 01.b.2895-1
 
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2
, In:

Ornitologia Brasileira : [uma introdução] / Helmut Sick. ..:

,
Sick, Helmut ; Barruel, Paul - 2.a ed. . , 1986
Copies:  Zentrale:Magazin 01.b.2895-2
 
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3

Observations on the Andean-Patagonian Component of Southeas..:

Sick, Helmut
Ornithological Monographs.  , 1985
Link: https://www.jstor.org/st..
 
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4

Brasilianischer Ara 1502/03 in Europa gemalt:

Sick, Helmut
Journal für Ornithologie.  125 (1984)  4 - p. 479-481 , 1984
Link: https://doi.org/10.1007/..
 
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5

Zur frühen bildlichen Darstellung neotropischer Papageien:

Sick, Helmut
Journal für Ornithologie.  122 (1981)  1 - p. 73-77 , 1981
Link: https://doi.org/10.1007/..
 
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6

Zum Problem der Elimination der Nestgeschwister beim Lerche..:

Sick, Helmut
Journal für Ornithologie.  122 (1981)  4 - p. 437-438 , 1981
Link: https://doi.org/10.1007/..
 
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7

Nocturnal Activities of Brazilian Hummingbirds and Flycatch..:

Sick, Helmut ; Teixeira, Dante Martins
The Auk.  98 (1981)  1 - p. 191-192 , 1981
Link: https://www.jstor.org/st..
 
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8

Characteristics of the Razor-Billed Curassow (Mitu mitu mit..:

Sick, Helmut
The Condor.  82 (1980)  2 - p. 227-228 , 1980
Link: https://www.jstor.org/st..
 
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9

Notas sobre aves brasileiras raras ou ameaçadas de extinç.. 

[Mit engl. Zsfassung.]  Publicações avulsas do Museu nacional ; 62
Sick, Helmut ; Martins Teixeira, Dante , 1979
Copies:  Zentrale:Magazin bf 7375
 
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10

Zur Nistweise der CotingidenIodopleura undXipholena:

Sick, Helmut
Journal für Ornithologie.  120 (1979)  1 - p. 73-77 , 1979
Link: https://doi.org/10.1007/..
 
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11

The Egg of the Crowned Solitary Eagle, Harpyhaliaetus coron..:

Sick, Helmut ; Teixeira, Dante Martins
The Condor.  79 (1977)  1 - p. 133 ff. , 1977
Link: https://www.jstor.org/st..
 
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12

Blackpoll Warbler on Winter Quarters in Rio de Janeiro, Bra..:

Sick, Helmut
The Wilson Bulletin.  83 (1971)  2 - p. 198-200 , 1971
Link: https://www.jstor.org/st..
 
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13

Über Eier und Lebensweise der Weißflügel-Kotinga,Xipholena ..:

Sick, Helmut
Journal für Ornithologie.  111 (1970)  1 - p. 107-108 , 1970
Link: https://doi.org/10.1007/..
 
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14

Notes on Brazilian Cracidae:

Sick, Helmut
The Condor.  72 (1970)  1 - p. 106-108 , 1970
Link: https://www.jstor.org/st..
 
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15

Kurze Mitteilungen:

Sick, Helmut ; Castroviejo, Javier ; Löhrl, H....
Journal für Ornithologie.  108 (1967)  2 - p. 218-229 , 1967
Link: https://doi.org/10.1007/..
 
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