General info

Name of Zoo: Dierenrijk
Name of respondent: K. Jansen
E-mail address of respondent:
Name of Exhibit: Vogelrijk
Opening Date/Year: 01-01-11


Height in m: 10
Area in m2: 5040
Volume in m3: 30600


Shape sides: Irregular 

Shape of top: flat 


1) placement main support structures: inside (e.g. tent-like)
2) materials main support: metal, specify type: Steel
3) special supports/protection for
(a) interface net/mesh and main support (specify): Ring
(b) protection from main supports rotting in ground (specify ): N.a.
4) secondary supporting structures: cables
5) lowering or removal of top when snow or severe winds expected possible: No
6) constructor: In-house
Material sides
1) solid (rock, brick wood etc) 0
2) glass 0
3) piano wire 0
4) netting/mesh 5+
a) material polyethelen
b) name manufacturer Libema BV
c) supplier Van Beelen N.T.N Ijmuiden
d) product name
e) opening size 5×5
f) diameter 7
g) color Black
h) configuration knotted
i) how is netting/meshing attached to aviary structure? With strong rope which is attached to a ring around the main support
j) visibility through net/mesh satisfactory
k) water resistance excellent
l) UV resistance excellent
Material top
1) Same as sides no
2) Not same as sides a) name manufacturer Libema BV
b) supplier Van Beelen N.T.N Ijmuiden
c) name product
d) material polyethelen
e) configuration knotted
f) opening size 10×10
g) diameter 14
h) color Black
i) water resistance excellent
j) UV resistance excellent

Visitor viewing

Walk through / walk in: yes
Barriers between public and birds: vegetation
Other special features to enhance viewing possibilities: Levelling landscape

Entrances and exits


i. double doors with area between: yes
ii. through attached building: no
iii: please describe how you bring in large enclosure furnishings that are too large to be brought through the doors: Special metal door

Visitor: single door plus curtain
Curtains: flexible plastic strands 

Water area

% surface area water (versus land): 20
Frequency of drainage and cleaning: None
Type of water: running
Filtration system: yes
Depth in cm:

i. minimum: 2
ii. maximum: 50
iii. % surface area < 20 cm: N.A.


Sand:  0
Grass: 50
Dirt: 10
Rocks: 0
Visitor path: 20
Other: 0


Grass/other herbacious plants < 20 cm high cover:  80
Herbacious plants/shrubs 20 cm- 1m high cover:  10
Herbacious plants/shrubs/trees 1 m-3 m high cover: 0
Number of coniferous trees > 3 m high: 0
Number of deciduous trees > 3 m high:  5
Are there any plants you would recommend for aviaries?:  N.A.
Are there any plants that have been problematic in this aviary?: N.A.

Predator protection

Electric fence inside: no
Electric fence outside: no
Different type meshing along bottom: yes, 150 cm high
Plastic along perimeter: no
Concrete under ground: no
Other (specify): N.A.

Suplemental lightning

Supplemental lighting outside: No

Permanent introduction/catching area present

Introduction and/or catching area present: yes

Indoor enclosure

a) attached to aviary yes 1 attached, other 3 not
b) dimensions
i. length 9-72 m2
ii. width
iii. Height 2-4 m
c) average number of nights used per year 60
d) average number of days used per year 60
e) direct access to main outside enclosure no
f) direct access to alternative outdoor area no
g) substrates (specify) Concrete/strew
h) usable water area present for bathing yes
i) possibility to subdivide area if need to no
j) keeper access area not shared by birds yes
k) natural sunlight received yes
l) number of hours of artifical light 8
m) heating supplied no
n) please describe ventilation system
o) visitor viewing no


Problems with:
a) Indigenous bird species entering enclosure
yes, specify Lot of jackdaws, sparrows, magpies, collared doves, hawks and crows
b) Predation in enclosures
c) Aviary withstanding winds experienced
d) Aviary withstanding snow experienced
e) Excessive mortality and or accidents with one or more species
f) other health issues, e.g. foot lesions
g) frequent replacement or repair of materials
h) husbandry issues e.g. cleaning, heating, moving birds


Visitor: yes, specify Visitors are scared for the pelicans
Keeper: yes, specify Visitorpaths are hard to clean 


Materials and labor: 400,000 
Maintenance (e.g. replacement of netting etc.):
Were there any choices made/possibilities to reduce costs?

Enclosure data submission

Contact person: Steven van den Heuvel and Kitty Ludwig
Data submitted: 10-02-12