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The present study investigated diurnal or daily activity patterns of an individual captive lion (Panthera leo) in Siantar Zoo, North Sumatra, Indonesia. Behavioral observations of 70 hours in 10-days observation were analyzed descriptively for common Felidae behaviors identified using a standardized Felidae ethogram. The methodology used was focal animal sampling with continuous sampling of data record or 5-minute sampling periods. We reported that the captive lion allocated the most time budgets in inactive behavior or sleeping with the percentage of 62.88% or 2,604 minutes. Incidence of pacing as stereotypic behavior was documented in low percentage or 4.46% within the duration of or 189 minutes in our study. The dominant sleeping behavior may be considered as normal to captive Felidae in many zoos while some consideration upon their effect to visitor may be evaluated in the future study. Dynamic condition of display cage may be enriched to trigger better behavior related to welfare implications on the captive lion.

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Sumatran elephant (Elephas maximus sumatranus) is a social animal living in groups. A group of elephant is called herd consists of male, female, allomother and calf. Non-parenting females are called allomother with the role of maintaining calves from other females. In daily activity, allomother may also display a typical infant handling which is valuable for studying interaction between them. This study will describe the daily activity of elephant allomother in Tangkahan Conservation Response Unit (CRU) Area, Langkat, North Sumatera. Methodology used was focal animal sampling with continuous sampling of data record. Object in this study were two allomothers, namely Ardana and Sari with three calves, namely Christopher, Albertina and Eropa. Daily activities of allomothers were recorded as Defecating (DF), Urinating (UR), Mudding (MU), Resting (RE), Mating (MT), Salting (ST), Feeding (FE), Parenting (PR), Drinking (DR) and Walking (WK). We recorded 19,569 sample points from allomother daily activities with Ardana having 10,838 points and Sari having 8,821 points. The longest duration of activity recorded were: Parenting (PR) with 5,807.13 min, Walking (WK) with 5,695.50 min and Feeding (FE) with 3,842.71 min. The shortest duration recorded was Mating (MT) with only 18.96 min while remaining activities lasting between 346.25 to 614.63 min. Duration of daily activities is directly proportional to the percentage of frequency performed by allomothers.

As one of the four largest insect orders, Hymenoptera are important pollinators, parasitoids, and predators in the agricultural sector. The objective of this research was to study the diversity and abundance of hymenoptera in the Forest Area with Special Purpose/KHDTK Aek Nauli, Simalungun Regency, North Sumatra, Indonesia. The insect sampling was conducted during the day and night using yellow and light trap technique. The results obtained a total of 13 species of Hymenoptera consisting of 45 ind. The relative abundance was recorded from 2.22 to 22.22 with the highest abundance from Vespula sp (Vespidae) and Sceliphron curvatum (Spechidae). The highest Importance Value Index (IVI) of Hymenoptera species was documented from Brachymyrmex sp. (Formicidae) at 115.56 and Polybia fastidiosuscula (Vespidae) at 106.67. The Shannon’s diversity (H’) of Hymenoptera ranged between 0.89 and 1.83 among sites or categorized as low-to-medium level of biodiversity with an evenness index (E) from 0.64 to 1.00. This finding may be noted as our first attempt in documenting the beta diversity of insects in the forest region.

The Sumatran elephant is the largest mammal species on the island of Sumatera. They are listed by the IUCN as critically endangered (IUCN, 2020). The current population throughout Sumatera lies on 22 home ranges and most of them are in critical condition (KLHK, 2020). One of the home ranges in Aceh Province is in the landscape of Mila-Tange, Pidie Regency. This landscape is a meeting point among the elephant herds. The herds that have been separated into small groups will gather with the other groups in several months. This phenomenon becoming one of the triggers for the incidents of human-elephant conflict. The conservation activity is being implemented by taking into account the needs of livelihood in the area. Therefore, the research was conducted to recognize the movement pattern and its range in this landscape during period of January to December 2021. The results show that the elephant herd range lies from 123 km2 to 413 km2. The movement patterns are concentrating in the type of shrubs (1.227 points which equal to 46.73%) and mixed dry land agriculture (923 points which equal to 35.15%). The roaming area and movement patterns are mostly influenced by the environmental factors including natural food, land cover and anthropogenic activities.