Balaeniceps rex

By Olaf Oliviero Riemer, CC BY-SA 3.0

Etymology: Whale Head

First Described By: Gould, 1850 

Classification: Dinosauromorpha, Dinosauriformes, Dracohors, Dinosauria, Saurischia, Eusaurischia, Theropoda, Neotheropoda, Averostra, Tetanurae, Orionides, Avetheropoda, Coelurosauria, Tyrannoraptora, Maniraptoromorpha, Maniraptoriformes, Maniraptora, Pennaraptora, Paraves, Eumaniraptora, Averaptora, Avialae, Euavialae, Avebrevicauda, Pygostaylia, Ornithothoraces, Euornithes, Ornithuromorpha, Ornithurae, Neornithes, Neognathae, Neoaves, Aequorlitornithes, Ardeae, Aequornithes, Pelecaniformes, Balaenicipitidae

Status: Extant, Vulnerable 

Time and Place: Within the last 10,000 years, in the Holocene of the Quaternary 

The Shoebill is known from eastern central Africa 

Physical Description: There is no other dinosaur quite like the Shoebill. It is one of the most visually distinctive creatures, with traits monstrous and familiar that make it difficult to really understand exactly what you’re looking at. They stand up to 140 centimeters in height, which yes, is the height of a human being on the shorter side. They can even reach 152 centimeters tall – the same height as a 5 foot tall person. They have very long, skinny legs, with giant toes on their feet that are widely splayed out. Their bodies are huge, with short tails and bulky torsos. Their backs are grey, and their belly feathers are white. Their necks are a lighter grey, and there is some dark speckling all over their wings and right beneath their necks. Their heads continue that light grey coloration, and have small tufts of feathers as a crest on the back of the head. Shoebills also happen to feature yellow, unblinking, perfectly circular eyes, which is unsettling at best. They have heavy eyebrows of feathers over their eyes, giving them a look like they’re always glaring at you – which is even more disconcerting considering the giant, wide, scoop-shaped bill that the Shoebill is named for. The bill is orange, and ends in a small hook, just in case you weren’t terrified enough. 

By Peter Halasz, CC BY-SA 2.5

Diet: Shoebills feed mainly on fish – especially lungfish, though most large fish are acceptable. Amphibians, young crocodilians, water snakes, rodents, and young waterfowl are also fed upon by these giant terrifying creatures. 

By Snowmanradio, CC BY-SA 2.0

Behavior: Shoebills are calculating bastards – they’ll hover around lakesides and swamps with low oxygen in the water, which forces lungfish to come up to breathe – so that the Shoebill can then lean down and scoop them up. They are loners during the hunt, carefully taking each step as they make sure to not sink too far into the mud and weeds where they live. Their lunging after food is hard to miss – their mouths open wide, revealing how huge those bills really are, and giving it a sinister smile. These lunges are usually startling, as the Shoebill is usually still for a very long time before it goes after prey. It is as if a statue had suddenly come to life. This is especially disconcerting when the Shoebill opts for standing on floating vegetation – just casually going down with the current as though they were a giant Jacana. They tend to defend territories for food, at least somewhat, not coming closer than twenty meters to another Shoebill during feeding. They don’t sense their prey with feel, but entirely by sight – making them very unblinking and focused, adding to their strange aura. Shoebills are also usually silent, which just makes their entire aesthetic even more terrifying. When they do dare to make sounds, they make very raucous cries – usually while they fly. 

By Petr Simon

Yes, yes they can fly. Shoebills are some of the largest flighted birds today, which does not help. They hold their wings flat, pulling in their necks to their bodies to aid in making their flight more efficient. They have some of the slowest flaps of any bird, at 150 flaps per minute. They fly only a few meters at a time, and usually prefer to glide as much as possible. The farthest any Shoebill as traveled at one time seems to be 20 meters. As such, Shoebills are not very mobile birds, and they usually only move from place to place based on food availability. 

By African Parks/Bengweulu Wetlands Photography

Shoebills begin breeding depending on the water levels of their habitat at a given time. They lay their eggs when the rains begin to end and the waters start to recede; as such, the chicks hatch and fledge late in the dry season. They nest alone, though there are possible reports that they may form some breeding colonies in South Sudan. They make nests out of grass in a mound that is three meters wide, usually placed on a small island or on floating vegetation amongst dense papyrus. They lay two eggs that are incubated for a month. The chickare cute, fluffy, and grey, with tiny regular sized bills. They then fledge a little more than three months later and, what’s more, usually only one chick survives. The chicks and parents will make whining and mewing to each other to get attention and beg for food. Sometimes, the young will make hiccups as begging calls. The parents are constantly with the young for the first forty days of rearing, only briefly leaving to get food and water or nest material. As the chicks age, the parents spend more and more time away, but they still bring food regularly. The chicks, after fledging, remain dependent on the parents for food for a few more years. They reach reproductive age at around three to four years. Displays often including mooing and bill clattering, which can be accompanied by the shaking of the head from side to side, which is quite the undertaking for a bird with such a large head. Breeding pairs stay together for the season, and break up when the chicks leave the nest. Shoebills can live up to fifty years, which is aided by the fact that they tend to not have predators after reaching full size. 

By Hans Hillewaert, CC BY-SA 3.0

Ecosystem: Shoebills stick to marshes, especially papyrus marshes and those with reeds and cattails. They will also gather around marshy lakesides, especially near Lake Victoria. They go wherever they can find floating vegetation to stand upon, including ricefields. They tend to go where animals such as hippopotamus go, since the hippo can dredge up food that the Shoebill can then feed upon. 

By Fritz Geller-Grimm, CC BY-SA 2.5

Other: Shoebills are currently considered vulnerable to extinction, with 5000 to 8000 birds thought to be remaining in the wild (though that may be low and there may be as many as 10,000). The reasons for this decline in population is partially due to habitat loss – the Shoebill is dependent on papyrus swamps and other wetland habitats, which are targeted by drainage schemes and other development activities. Animals being brought across these swamps and trampling their young also majorly contributes to population decline. It is a very unique bird and a very popular one, so luckily there are some conservation efforts ongoing, especially in zoos. Some hunting is also contributing to population loss. Despite these conservation efforts, only once has the Shoebill been successfully bred in captivity. 

~ By Meig Dickson 

Sources under the Cut 

Elliott, A., Garcia, E.F.J. & Boesman, P. (2019). Shoebill (Balaeniceps rex). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. 

Guillet, A (1978). “Distribution and Conservation of the Shoebill (Balaeniceps Rex) in the Southern Sudan”. Biological Conservation. 13 (1): 39–50. 

Hackett, SJ; Kimball, RT; Reddy, S; Bowie, RC; Braun, EL; Braun, MJ; Chojnowski, JL; Cox, WA; Han, KL; et al. (2008). “A phylogenomic study of birds reveals their evolutionary history”. Science. 320 (5884): 1763–8.  

Hagey, J. R.; Schteingart, C. D.; Ton-Nu, H.-T. & Hofmann, A. F. (2002). “A novel primary bile acid in the Shoebill stork and herons and its phylogenetic significance”. Journal of Lipid Research. 43 (5): 685–90. 

Hall, Whitmore (1861). The principal roots and derivatives of the Latin language, with a display of their incorporation into English. London: Longman, Green, Longman & Roberts. p. 153. 

Hancock & Kushan, Storks, Ibises and Spoonbills of the World. Princeton University Press (1992), 

Houlihan, Patrick F. (1986). The Birds of Ancient Egypt. Wiltshire: Aris & Phillips. p. 26. 

Jasson, J.; Nahonyo, Cuthbert; Lee, Woo; Msuya, Charles (March 2013). “Observations on nesting of shoebill Balaeniceps rex and wattled crane Bugeranus carunculatus in Malagarasi wetlands, western Tanzania”. African Journal of Ecology. 51 (1): 184–187. 

Mayr, Gerald (2003). “The phylogenetic affinities of the Shoebill (Balaeniceps rex)”. Journal für Ornithologie.  

Mikhailov, Konstantin E. (1995). “Eggshell structure in the shoebill and pelecaniform birds: comparison with hamerkop, herons, ibises and storks”. Canadian Journal of Zoology. 73 (9): 1754–70. 

Muir, Allan; King, C.E. (January 2013). “Management and husbandry guidelines for Shoebills Balaeniceps rex in captivity”. International Zoo Yearbook. 47 (1): 181–189.  

Stevenson, Terry and Fanshawe, John (2001). Field Guide to the Birds of East Africa: Kenya, Tanzania, Uganda, Rwanda, Burundi. Elsevier Science. 

Tomita, Julie (2014). “Challenges and successes in the propagation of the Shoebill Balaeniceps rex: with detailed observations from Tampa’s Lowry Park Zoo, Florida”. International Zoo Yearbook. 132 (1): 69–82.  

Williams, J.G; Arlott, N (1980). A Gield Guide to the Birds of East Africa. Collins.