2-6-2023 BALI BIRD PARK, BALI - AFRICAN OPENBILL (Anastomus lamelligerus)

The African openbill (Anastomus lamelligerus) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the continent and A. l. madagascariensis living on the island of Madagascar. Scientists distinguish between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis. The Asian openbill (Anastomus oscitans) found in Asia is the African openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name. 

5-6-2019 MOREMI CAMP, BOTSWANA - MAINLAND AFRICAN OPENBILL (Anastomus lamelligerus ssp. lamelligerus)

The African Openbill (Anastomus lamelligerus ) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the main continent and A. l. madagascariensis living on the island of Madagascar. Scientists make the difference between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis.The Asian Openbill (Anastomus oscitans ) distributed in Asia is the African Openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name.

The African Openbill is a stork measuring 80-94 cm and weighing 1-1.3 kg. The species does not exhibit any major sexual dimorphism, although the males are slightly larger than the females and have a longer and heavier bill. The adult bill is betwen 135-196 mm in length, brownish in color and has a gap between the upper aend lower mandible. This gap is non-existent in juvenile birds and develops as the bird ages. It is because the two mandibles of the beak only meet at the tip and not in the middle that this stork genus received the name of “openbill”.

The adult plumage is overall black with iridescent green feathers on their backs, coverts and abdomens. The juvenile plumage is usually less vibrant and browner in color with the feathers of the underparts having pale tips. The legs and feet are black. The eyes are grey with grey lores and no distinct coloration of the eye-ring.

These storks are smaller in stature than most of the other species in their family which allows them to be much more agile in the air. This agility can be observed during their descents from high altitudes as they often perform steep dives and remarkable acrobatic manoeuvres. During their migration flights, the African openbill storks will use sustained flapping flight with an average wing flap rate of 200-210 flaps/minute. They will also often soar on the thermals when commuting to and from distant feeding areas. This allows them to travel long distances to obtain food without expending too much energy. In flight, these birds have their necks and head extended and their long, broad wings are spread out and perfect for soaring and gliding on the air currents.

3-6-2019 LINYANTI CAMP, BOTSWANA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African openbill (Anastomus lamelligerus) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the continent and A. l. madagascariensis living on the island of Madagascar. Scientists distinguish between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis. The Asian openbill (Anastomus oscitans) found in Asia is the African openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name. 

3-6-2019 LINYANTI CAMP, BOTSWANA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African Openbill (Anastomus lamelligerus ) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the main continent and A. l. madagascariensis living on the island of Madagascar. Scientists make the difference between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis.The Asian Openbill (Anastomus oscitans ) distributed in Asia is the African Openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name.

The African Openbill is a stork measuring 80-94 cm and weighing 1-1.3 kg. The species does not exhibit any major sexual dimorphism, although the males are slightly larger than the females and have a longer and heavier bill. The adult bill is betwen 135-196 mm in length, brownish in color and has a gap between the upper aend lower mandible. This gap is non-existent in juvenile birds and develops as the bird ages. It is because the two mandibles of the beak only meet at the tip and not in the middle that this stork genus received the name of “openbill”.

The adult plumage is overall black with iridescent green feathers on their backs, coverts and abdomens. The juvenile plumage is usually less vibrant and browner in color with the feathers of the underparts having pale tips. The legs and feet are black. The eyes are grey with grey lores and no distinct coloration of the eye-ring.

These storks are smaller in stature than most of the other species in their family which allows them to be much more agile in the air. This agility can be observed during their descents from high altitudes as they often perform steep dives and remarkable acrobatic manoeuvres. During their migration flights, the African openbill storks will use sustained flapping flight with an average wing flap rate of 200-210 flaps/minute. They will also often soar on the thermals when commuting to and from distant feeding areas. This allows them to travel long distances to obtain food without expending too much energy. In flight, these birds have their necks and head extended and their long, broad wings are spread out and perfect for soaring and gliding on the air currents.

30-5-2019 THORNTREE CAMP, ZAMBIA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African Openbill (Anastomus lamelligerus ) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the main continent and A. l. madagascariensis living on the island of Madagascar. Scientists make the difference between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis.The Asian Openbill (Anastomus oscitans ) distributed in Asia is the African Openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name.

The African Openbill is a stork measuring 80-94 cm and weighing 1-1.3 kg. The species does not exhibit any major sexual dimorphism, although the males are slightly larger than the females and have a longer and heavier bill. The adult bill is between 135-196 mm in length, brownish in color and has a gap between the upper and lower mandible. This gap is non-existent in juvenile birds and develops as the bird ages. It is because the two mandibles of the beak only meet at the tip and not in the middle that this stork genus received the name of “openbill”.

The adult plumage is overall black with iridescent green feathers on their backs, coverts and abdomens. The juvenile plumage is usually less vibrant and browner in color with the feathers of the underparts having pale tips. The legs and feet are black. The eyes are grey with grey lores and no distinct coloration of the eye-ring.

These storks are smaller in stature than most of the other species in their family which allows them to be much more agile in the air. This agility can be observed during their descents from high altitudes as they often perform steep dives and remarkable acrobatic manoeuvres. During their migration flights, the African openbill storks will use sustained flapping flight with an average wing flap rate of 200-210 flaps/minute. They will also often soar on the thermals when commuting to and from distant feeding areas. This allows them to travel long distances to obtain food without expending too much energy. In flight, these birds have their necks and head extended and their long, broad wings are spread out and perfect for soaring and gliding on the air currents.

Some African Openbill population are trans-equatorial migrants. Timing their migration to arrive in West Africa for the start of the dry period. They migrate in flocks and most of the reason and organisation behind these movements remain unknown. Some populations migrate while others are residents, migration in African Openbill highly depends on the weather conditions.

29-5-2019 THORNTREE CAMP, ZAMBIA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African openbill (Anastomus lamelligerus) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the continent and A. l. madagascariensis living on the island of Madagascar. Scientists distinguish between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis. The Asian openbill (Anastomus oscitans) found in Asia is the African openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name. 

2-6-2019 LINYANTI, BOTSWANA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African openbill, Anastomus lamelligerus, is a medium-sized stork with a distinctive bill that is adapted to its diet. Adults measure between 80–94 cm in length and weigh 1–1.3 kg. The species shows little sexual dimorphism, though males are marginally larger with a more substantial bill. The adult's bill, brownish and measuring 135–196 mm, features a notable gap between the upper and lower mandibles, which is absent in juveniles but develops with age. The plumage of adults is predominantly black with a shimmering green sheen on their backs, coverts, and abdomens, while juveniles display a duller, browner coloration with paler tips on their underparts. Legs and feet are black, and the eyes are grey without distinct eye-ring coloration.

When identifying the African openbill, look for the unique gap between the mandibles of the bill, which only meet at the tip. The iridescent green feathers on the back and the overall black plumage are also key characteristics. Juveniles are less vibrant and have brownish plumage with pale-tipped underparts.

The African openbill is typically found in freshwater wetlands with nearby tall trees or shrubs for nesting. They inhabit environments where their preferred mollusc prey is abundant.

This stork is widely distributed across Sub-Saharan Africa and western Madagascar. It has a patchy distribution but is considered common to locally abundant within its range.

The African openbill is an agile flier, capable of performing steep dives and acrobatic maneuvers. It can be seen foraging in shallow waters, often standing on the backs of hippopotamuses to access snails dislodged by the mammals. In flight, the neck and head are extended, and the broad wings are adept at soaring and gliding on air currents.

ften accompanied by bill clatters, a common trait among Ciconiidae. The African openbill also emits croaks and honks loudly.

Breeding seasons vary with location, timed to coincide with the emergence of snails. African openbills form monogamous pairs and nest in colonies, which can be mixed with other waterbirds. The nests are constructed in tall trees, and both parents share in the incubation and care of the young.

The closest relative to the African openbill is the Asian openbill (Anastomus oscitans), which shares the large and peculiarly shaped bill.

The African openbill's diet is specialized, consisting primarily of aquatic snails and occasionally freshwater mussels, frogs, crabs, fish, worms, and large insects. They forage by wading in shallow water, using their bills to grasp and carry prey to shore for consumption. The species is adept at extracting mollusc meat without breaking the shells.

The IUCN lists the African openbill as Least Concern. While the species is not currently threatened, its large size and low reproductive success mean that habitat changes could significantly impact populations.

8-6-2019 KHWAI CAMP, BOTSWANA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African Openbill (Anastomus lamelligerus ) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the main continent and A. l. madagascariensis living on the island of Madagascar. Scientists make the difference between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis.The Asian Openbill (Anastomus oscitans ) distributed in Asia is the African Openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name.

The African Openbill is a stork measuring 80-94 cm and weighing 1-1.3 kg. The species does not exhibit any major sexual dimorphism, although the males are slightly larger than the females and have a longer and heavier bill. The adult bill is between 135-196 mm in length, brownish in color and has a gap between the upper and lower mandible. This gap is non-existent in juvenile birds and develops as the bird ages. It is because the two mandibles of the beak only meet at the tip and not in the middle that this stork genus received the name of “openbill”.

The adult plumage is overall black with iridescent green feathers on their backs, coverts and abdomens. The juvenile plumage is usually less vibrant and browner in color with the feathers of the underparts having pale tips. The legs and feet are black. The eyes are grey with grey lores and no distinct coloration of the eye-ring.

These storks are smaller in stature than most of the other species in their family which allows them to be much more agile in the air. This agility can be observed during their descents from high altitudes as they often perform steep dives and remarkable acrobatic manoeuvres. During their migration flights, the African openbill storks will use sustained flapping flight with an average wing flap rate of 200-210 flaps/minute. They will also often soar on the thermals when commuting to and from distant feeding areas. This allows them to travel long distances to obtain food without expending too much energy. In flight, these birds have their necks and head extended and their long, broad wings are spread out and perfect for soaring and gliding on the air currents.

Some African Openbill population are trans-equatorial migrants. Timing their migration to arrive in West Africa for the start of the dry period. They migrate in flocks and most of the reason and organisation behind these movements remain unknown. Some populations migrate while others are residents, migration in African Openbill highly depends on the weather conditions.

5-6-2019 LINYANTI CAMP, BOTSWANA - AFRICAN OPENBILL (Anastomus lamelligerus)

The African Openbill (Anastomus lamelligerus ) is a species of stork from the family Ciconiidae. It is widely distributed in Sub-Saharan Africa and western regions of Madagascar. This species is considered common to locally abundant across its range, although it has a patchy distribution. Some experts consider there to be two sub-species, A. l. lamelligerus distributed on the main continent and A. l. madagascariensis living on the island of Madagascar. Scientists make the difference between the two sub-species due to the more pronounced longitudinal ridges on the bills of adult A. l. madagascariensis.The Asian Openbill (Anastomus oscitans ) distributed in Asia is the African Openbill’s closest relative. The two species share the same notably large bill of a peculiar shape that gives them their name.

The African Openbill is a stork measuring 80-94 cm and weighing 1-1.3 kg. The species does not exhibit any major sexual dimorphism, although the males are slightly larger than the females and have a longer and heavier bill. The adult bill is betwen 135-196 mm in length, brownish in color and has a gap between the upper aend lower mandible. This gap is non-existent in juvenile birds and develops as the bird ages. It is because the two mandibles of the beak only meet at the tip and not in the middle that this stork genus received the name of “openbill”.

The adult plumage is overall black with iridescent green feathers on their backs, coverts and abdomens. The juvenile plumage is usually less vibrant and browner in color with the feathers of the underparts having pale tips. The legs and feet are black. The eyes are grey with grey lores and no distinct coloration of the eye-ring.

These storks are smaller in stature than most of the other species in their family which allows them to be much more agile in the air. This agility can be observed during their descents from high altitudes as they often perform steep dives and remarkable acrobatic manoeuvres. During their migration flights, the African openbill storks will use sustained flapping flight with an average wing flap rate of 200-210 flaps/minute. They will also often soar on the thermals when commuting to and from distant feeding areas. This allows them to travel long distances to obtain food without expending too much energy. In flight, these birds have their necks and head extended and their long, broad wings are spread out and perfect for soaring and gliding on the air currents.