Zoo Zagreb – African birds enclosure

Name of Zoo: Zoological garden Zagreb
Name of respondent: Andrea Bračko; Ema Stanić
E-mail address of respondent: andrea@zoo.hr;  ema.stanic@zoo.hr;
Name of Exhibit: African birds enclosure
Opening Date/Year: 16.10.2016.

Height in m: “12,5 (central pillar) , 6,0-8,5 (perimeter)”
Area in m2: “195,30 ( indore enclosure) 1031,70 ( outdore enclosure)”
Volume in m3: #

Shape sides: Irregular
Shape of top: multiple peaks

Frame
1) placement main support structures: Inside (e.g. tent-like) and perimeter (e.g. corners)
2) materials main support: Metal, specify type: steel
3) special supports/protection for:
(a) interface net/mesh and main support:
(b) protection from main supports rotting in ground:
4) secondary supporting structures: Cables
5) lowering or removal of top when snow or severe winds expected possible: No
6) constructor:

Material sides
1) solid (rock, brick wood etc): 0
2) glass: 1
3) piano wire: 0
4) netting/mesh: 7
a) material: Stainless steel (multiple strand – rope, cable)
b) name manufacturer:
c) supplier:
d) product name:
e) opening size: 25×25
f) diameter: 1.2
g) color: black oxide
h) configuration: elips stainless steel mesh
i) how is netting/meshing attached to aviary structure? with bolts
j) visibility through net/mesh: excellent
k) water resistance: excellent
l) UV resistance: excellent

Material top
1) Same as sides: no

a) name manufacturer: HMJ
b) name product: Dyneema net
c) material other (specify): UHMWPE net
d) configuration: woven
e) opening size: 30×30
f) diameter: 1.6
g) color: black
h) water resistance: excellent
i) UV resistance: excellent

Walk through / walk in: yes   , please specify number of sides for visitor viewing: 8
Barriers between public and birds: water and wooden barriers
Other special features to enhance viewing possibilities: viewpoint on the first floor 

Service:

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:

Visitor: double doors with area between
Curtains:

% surface area water (versus land): 40% (outdore enclosure) 
Frequency of drainage and cleaning: once a year 
Type of water: still
Filtration system: yes
Depth in cm:

i. minimum: 7
ii. maximum: 90
iii. % surface area < 20 cm: 50

Sand:  0.3
Grass: 98.1
Dirt: 0
Rocks: 0
Visitor path: 0
Other: 0

Grass/other herbacious plants < 20 cm high cover:  90%
Herbacious plants/shrubs 20 cm- 1m high cover:  1%
Herbacious plants/shrubs/trees 1 m-3 m high cover: 9%
Number of coniferous trees > 3 m high: 0
Number of evergreen trees >3 m high: 6
Number of deciduous trees > 3m high: 15
Are there any plants you would recommend for aviaries?:  N.A.
Are there any plants that have been problematic in this aviary?: Still new, no info

Electric fence inside: no
Electric fence outside: Yes 10-100cm
Different type meshing along bottom:
Plastic along perimeter:
Concrete under ground:
Other (specify):

Supplemental lighting outside: No

Introduction and/or catching area present: yes

Attached to aviary: yes
Dimensions:

i. length: 12
ii. width: 7
iii. Height: 6

Average number of nights used per year: N.A. , this year extra time due to AI
Average number of days used per year:
Direct access to main outside enclosure: no
Direct access to alternative outdoor area: no
Substrates (specify): grass
Usable water area present for bathing: yes
Possibility to subdivide area if need to: yes
Keeper access area not shared by birds: yes
Natural sunlight received: yes
Number of hours of artifical light: 10h
Heating supplied: yes
UV lighting: ARCADIA SUPER ZOO T5
UV Index Range: 0-4

Species currently held (if possible also historically) list: “Abdim’s stork, Black-crowned night heron, Cattle egret, Grey crowned – crane, African sacret ibis, Egyptian goose, Eurasian spoon bill, White-faced whistling duck.. “
Species not held successfully: N.A, newly open
Reason per species (please list species below)
i. escape:
ii. incompatibility:
iii. health issues:
iv. stress:
v. accidents (e.g. collisions):
vi. other:

Problems with: No
Indigenous bird species entering enclosure: No
Predation in enclosures: No
Aviary withstanding winds experienced: No
Aviary withstanding snow experienced: No
Excessive mortality and or accidents with one or more species: No
Other health issues, e.g. foot lesions: No
Frequent replacement or repair of materials: No
Husbandry issues e.g. cleaning, heating, moving birds: No

Visitor: N.A.
Keeper: N.A.

Design:
Materials and labor: 5 076 217 kn / 676 195 €
Maintenance (e.g. replacement of netting etc.):
Were there any choices made/possibilities to reduce costs? No

Contact person: andrea@zoo.hr;  ema.stanic@zoo.hr;
Data submitted: 12.3.2019.