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New breeding records of Little Grebe Tachybaptus ruficollis and Common Moorhen Gallinula chloropus at the northern limit of their Asian range
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... This species was a common summer breeding visitor until the 1980s (SMS, Heim et al. 2015). Today it is a vagrant; a single bird was on a well-vegetated lake in the south of the park on 6 October 2013 (P. ...
... Race poggei is a regular migrant and rare breeder. The first breeding record for Muraviovka Park was in 2013 (Heim et al. 2015). ...
The middle reaches of the Amur River in Far East Russia are still an under-surveyed region, yet holding a very high regional biodiversity. During a six-year survey at Muraviovka Park, a non-governmental nature reserve, 271 bird species have been recorded, 14 of which are globally threatened, highlighting the importance of this area for bird conservation.
In recent decades, several explanations for vagrancy of North Asian bird species in Europe have been suggested. The explanations can typically be divided into two, non‐exclusive groups. Some cite weather factors as the primary cause of vagrancy, whereas others hypothesize an internal defect behind the phenomenon. In addition, some authors also suggest climate‐driven range expansion following breeding population increase as a contributing factor. In recent years, studies have been published that have provided clear evidence for the origin of vagrant birds, as well as the reasons for their vagrancy. Here we summarize current knowledge and conclude that weather, habitat use, feeding habit, breeding success and climate change are important factors that affect the vagrancy of birds, together with the number of observers playing an important role in contributing data. In the future, advances in technology such as the development of tracking systems and the extensive use of stable isotopes will make it possible to explain the causes of vagrancy more precisely, so further research in this area of ornithology is essential.
The current study was intended to investigate the breeding habitats and ecology of the Eurasian coot Fulica atra in Fez region Morocco. To achieve our goals, nests were monitored in three wetlands Oued Al Jawahir river, Mahraz and El Gaada dams. In addition, nesting vegetation and nest’s dimensions were analysed to characterise the Eurasian coot nests. As results, 46 nests (74%) were found in Oued al Jawahir, compared with 15 nests (24%) in Mahraz dam. In El Gaada dam only 2 nests were built by the Eurasian coots. On the other hand, all nests were built on the riparian vegetation of the river and dams. Besides, nests were located in the periphery of the river stream. Many plants were used entirely or special parts, such as stems and roots in nesting activity. Typha angustifolia is used in 45.3% of nests and J. acutus in 38.6% of nests. Other plants are found with a minor presentation in nests, including P. stratiotes (9.6 %) of nests, Phragmites australis (5.6%), and Tamaris sp. (0.9%). These plants form the structure of nests and support. Besides nesting in river’s periphery, the nests were constructed at an average height of 14.5 ± 0.05 away from the stream of water. Concerning nest success, nest predation ranged from 57% (2018) to 60% (2019). Nests were lost due to water stream and human disturbance. Finally, Eurasian coots build its nests in the periphery of water ecosystems and in an important high to avoid flooding periods and human disturbances.
Two new species were recorded at Muraviovka Park and added to the avifauna of the Amur Oblast. A male Rufous-bellied Woodpecker was trapped and ringed 11.05.2016, and a Chinese Paradise Flycatcher was sound-recorded 26.06.2016. Both species are of southern origin and might have been overshoot migrants from the north-western edge of their range. Both species are listed in the Russian Red Data Book, and might therefore qualify for an inclusion in the Red Data Book of the Amur Oblast as well.
The Amur Bird Project: Bird migration research and environmental education in Far East Russia
В статье представлена фактическая информация о современном количественном статусе в двух крайних восточных районах Амурской области – Архаринском и Бурейском - пятидесяти краснокнижных видов птиц. Такие виды, как дальневосточный аист, японский, даурский и черный журавли, большой и белокрылый погоныши, амурская выпь, дальневосточный кроншнеп, скалистый голубь встречаются в регионе в количестве, представляющем ключевую важность с точки зрения территориальной охраны. Тенденции изменения численности негативны у чернозобой гагары, лебедя-кликуна, огаря, ястребиного сарыча, уссурийского журавля, лысухи и некоторых других видов. Относительно благополучны популяции большого погоныша, амурской выпи, дальневосточного кроншнепа, мандаринки, скалистого голубя.
15 октября 2007 г. взрослая самка малой поганки была добыта на р. Томь (левый приток р. Зеи) выше впадения ее левого притока р. Алеун.
The changes in range margins of birds breeding in Finland was analysed from published atlas data for a 12-year period (1974-1979 to 1986-1989). The change in range margin was statistically corrected for changes in species' distribution using linear regression. For species predominantly occurring in southern Finland (n = 116), the expected range margin shift, if their distribution would not have changed, was 18.8 km northwards. Northerly species (n = 34) showed no such significant range margin shift. A similar result was found earlier for UK birds. Recent range margin shifts in birds therefore seem to be a general phenomenon, which may be related to climate change.
About the distribution of southern bird species in the middle Burea River watershed
- A I Antonov
Antonov, A. I. (in press) About the distribution of southern bird species in
the middle Burea River watershed. Far-Eastern J. Orn. 3. (In Russian.)