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Potential Migratory Birds Habitats in the Northern Part of Bangladesh

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Potential Migratory Birds Habitats in the Northern Part of Bangladesh Potential Migratory Birds Habitats in the Northern Part of Bangladesh Fa-Tu-Zo Khaleque Milaą, Ayesha Akhter Zhilik², Ebtisamul Zannat Mim², Md Golam Rabbią ąBangladesh Forest Department, ²University of Dhaka Introduction different size, and have a complex ecosystem. On the areas having mixed soil the natural Bangladesh is a riverine country. About 800 flora had grown. In the dry season, rivers including tributaries flow through the approximately the Padma had a total of 13 country constituting a waterway of total length accreted island chars, each longer than 3.5 km around 24,140 km. The river system can be and an additional 18 island chars were each divided into four major networks: (1) between 0.35 and 3.5 km long. Char erosion Brahmaputra-Jamuna river system, (2) and accretion depends on the migration of the Ganges-Padma river system, (3) Surma- meandering bends of the river. Meghna river system, and (4) Chittagong region river system. Riverine habitats (water channels and sandbars) support a wide variety of bird species, many of The Padma-Ganges is the central part of the them nests on sandbars, others forage along or deltaic river system with hundreds of rivers. in the water channel. During winter season a Within Bangladesh, Ganges is divided into number of migratory birds invades the Padma two sections - first, the Ganges, 258 km long, char-land, and some people hunts these birds starting from the western border with India. to earn money. The second is the Padma, 120 kilometers long and from 48 km wide (Banglapedia 2006). The survey work is the result of three months Most of the major streams of the delta-rivers observation of migratory water birds at char- including its premier channel, the Ganges- lands of Padma River covering two districts of Padma, have been ceaselessly changing their Bangladesh and supported by the EAAF courses or migrating laterally and occupying through small grant. new sites. Even the minor channels of the delta show the same tendency. Study Sites The study was conducted in 02 northern The mighty river Padma has become districts (Rajshahi and Chapai Nawabgonj) of compartmentalized by the development of the country basically focused on the char lands sandbars commonly called as ‘char-lands’ of the Padma river basin. which are quite high from the water level. Char-lands are generally a seasonal natural 1. Premtoli process of the riverine ecology, especially at · Under Godagari and Paba Upazila of the lower reach of the rivers. On the part of the Rajshahi District river that flowing adjacent to the Rajshahi district, there are few char-lands which · Area- 1790.351 hectares become continuous escaping at some parts and are quite old. The chars at some part may be sandy, in some parts may be alluvial, having number of water pockets or channels of 1 | P a g e Survey Methods The survey was conducted in two districts- Rajshahi and Chapai Nawabgonj which supports the mighty Padma, between November 2018- December 2018and January 2019. In the absence of a precise map of the wintering grounds of migratory water birds, specific survey locations (both char-lands and river channel) in the study area were identified Map 1: Premtoli from satellite images freely available from Google Earth. 2. Majhar Diyar/Majher Char In this survey, ‘Point Count’ method was used · Under Paba Upazila of Rajshahi for determining the relative abundance of District birds; in which an observer records all the · Area- 23.57 hectares birds seen and heard from a point count station for a set period of time. The survey was somewhere in boat-based and somewhere in char-land based. A minimum of three observers undertook this survey. While cruising the rivers, surveyors observed each bank of the river or char-lands, while another observed facing forward to minimize counting and identification errors. In addition, local fishermen and villagers were Map 2: Majhar Diyar/Majher Char interviewed about the occurrence and possible threats. 3. Bakor Ali Ghat · Under Chapai Nawabgonj of Rajshahi Results Division · Area- 5909.152 hectares During the three months survey periods, total 13 sites or points was identified in between two above mentioned districts of Rajshahi Division, Bangladesh as wintering grounds. GPS coordinates of these 13 sites are given below: Map 3: Bakor Ali Ghat 2 | P a g e Table 1. GPS coordinates of specific sites in Site 1. Srirampur (East) Rajshahi District Table 3. Numbers of birds recorded along Site Sites Name Lattitude Longitude Padma river: Srirampur No. English Scientific Name Number IUCN 1 Srirampur N 24˚ 20.94' E 88˚ 450' Name of Red List (East) Species Status 2 Khanpur N 24˚ 19.502' E 88˚35.570' Brown- Larus 1 LC 3 Majhar Diyar 1 N 24˚ 20.426' E 88˚ 33.329' headed Gull brunnicephalus 4 Majhar Diyar 2 N 24˚ 20.450' E 88˚ 32.941' Common Tringa nebularia 7 LC 5 Char Khidirpur N 24˚ 18.962' E 88˚ 37.299' Greenshank Pallas's Gull Larus 2 LC 6 10 number Char N 24˚ 19.033' E 88˚ 39.072' ichthyaetus 7 Premtoli N 24˚ 23.000' E 88˚ 23.989' Red-crested Netta rufina 3 LC (Limmon char) Pochard 8 Premtoli N 24˚ 22.870' E 88˚ 24.077' Ruddy Tadorna 44 LC (Nilbon char) Shelduck ferruginea Tufted Aythya fuligula 9 LC Table 2. GPS coordinates of specific sites in Duck Chapai Nawabgonj District Wood Tringa glareola 5 LC Site Sites's Name Lattitude Longitude Sandpiper No. 1 Bakoralighat 1 N 24˚ 32.40' E 88˚ 10.363' Site 2. Khanpur 2 Bakoralighat 2 N 24˚ 31.783' E 88˚ 09.403' Table 4. Numbers of birds recorded along 3 Rohonpur- N 24˚ 51.923' E 88˚17.841' Padma river: Khanpur Charolbeel English Scientific Name Number IUCN 4 Charolbeel 2 N 24˚ 52.397' E 88˚ 18.387' Name of Red 5 Shonatola N 24˚ 52.573' E 88˚ 19.007' Species List Status During the survey period, total 30 species of Ruddy Tadorna 102 LC Shelduck ferruginea waterbirds were identified from the char-lands Common Tringa nebularia 3 LC of the Padma River, which are migratory to Greenshank Bangladesh. Twenty-one species were Great- Podiceps 2 LC recorded from Rajshahi district and rest nine crested cristatus species were recorded from Chapai Grebe Nawabgonj district. Three globally vulnerable Pied Avocet Recurvirostra 4 LC avosetta species, the Common Pochard (Aythya ferina), Grey Plover Pluvialis 6 LC the Lesser Adjutant (Leptoptilos javanicus) squatarola and the Wolly-necked Stork (Ciconia episcopus) were recorded during the survey. Site 3. Majhar Diyar 2 Table 5. Numbers of birds recorded along In November 2018, the survey was conducted Padma river: MajharDiyar 2 in Rajshahi district and the recorded species English Scientific Name Number IUCN are presented below as per recorded sites. Name of Red Species List Status Wood Tringa glareola 3 LC Sandpiper 3 | P a g e Ruddy Tadorna 31 LC Stork Shelduck ferruginea Black- Larus 1 LC Gadwall Mareca strepera 15 LC headed ridibundus Pin-tailed Gallinago 20 LC Gull Snipe stenura Pallas's Larus 1 LC Gull ichthyaetus In December 2018, the survey was conducted in Chapai Nawabgonj district and the recorded Site 6. Rohonpur-Charolbeel species are presented below as per recorded Table 8. Numbers of birds recorded along sites. Padma river: Rohonpur-Charolbeel English Scientific Number IUCN Name Name of Red List Site 4. Bakoralighat 1 Species Status Table 6. Numbers of birds recorded along Black- Himantopus 39 LC Padma river: Bakoralighat 1 winged Stilt himantopus English Scientific Number IUCN Common Actitis 2 LC Name Name of Species Red List Sandpiper hypoleucos Status Wood Tringa glareola 1 LC Ruddy Tadorna 65 LC Sandpiper Shelduck ferruginea Common Gallinago 3 LC Wood Tringa 7 LC Snipe gallinago Sandpiper glareola Greylag Anser anser 8 LC Site 7.Charolbeel 2 Goose Table 9. Numbers of birds recorded along Pallas's Larus 1 LC Gull ichthyaetus Padma river: Charolbeel 2 Gadwall Mareca 28 LC English Scientific Number IUCN strepera Name Name of Species Red List Status Lesser Leptoptilos 10 VU Site 5. Bakoralighat 2 Adjutant javanicus Table 7. Numbers of birds recorded along Black- Himantopus 1 LC Padma river: Bakoralighat 2 winged himantopus English Scientific Number of IUCN Stilt Name Name Species Red List Status Northern Anas acuta 6 LC In January 2019, the survey was conducted in Pintail Rajshahi district for the second time as Gadwall Mareca 105 LC because the number of species was high in the strepera previous year and the recorded species are Ruddy Tadorna 169 LC presented below as per recorded sites. Shelduck ferruginea Ruff Calidris 1 LC pugnax Site 1. Srirampur (East)-Monitoring Black- Himantopus 2 LC Table 10. Numbers of birds recorded along winged himantopus Padma river: Srirampur (East) Stilt English Scientific Number IUCN Green Tringa 14 LC Name Name of Species Red List Sandpiper ochropus Status Wolly- Ciconia 2 VU Ruddy Tadorna 18 LC necked episcopus Shelduck ferruginea 4 | P a g e Gadwall Mareca 3 LC Tufted Duck Aythya 9 LC strepera fuligula Great Podiceps 2 LC Creasted cristatus Site 10. 10 Number Char Grebe Table 13. Numbers of birds recorded along Padma river: 10 Number Char Site 8. Majhar Diyar 1 English Name Scientific Number IUCN Table 11. Numbers of birds recorded along Name of Species Red Padma river: Majhar Diyar 1 List English Name Scientific Number IUCN Status Name of Species Red Ruddy Tadorna 4 LC List Shelduck ferruginea Status Pallas's Gull Larus 2 LC Ruddy Tadorna 11 LC ichthyaetus Shelduck ferruginea Common Tadorna 3 LC Common Tringa 4 LC Shelduck tadorna Redshank totanus Garganey Spatula 20 LC Garganey Spatula 30 LC querquedula querquedula Gadwall Mareca 80 LC Gadwall Mareca 70 LC strepera strepera References Site 9.
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