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Birds are biological indicators for environment health in which their sightings and abundance could reflect a certain situation or become evaluation tool for co-existence of another species. Here, the study aims to observe urban settlements with substantial forestation, may it be artificial or natural, and the occurrence of bird assemblage across time. Considering the foraging activity of birds hardcoded with sustainability, their spatial overlap resultant into service provision, which can mean, baseline occurrence or an expected encounter equates to support system for ecological vigour.

From this, birds could indicate external environment vulnerability related to climatic fluctuations, whereby documentation of their arrival across spatial-temporal regimes allowed us to understand their distribution between residential and forested areas.

Though urban birds are abundant and viewed less important for conservation, the existence of certain species such as long-tailed shrike and little green pigeon disclose the types of food they consume and, the other types of birds attracted to their prey. With regard, the sightings of these birds would mean an encounter with 20 or more other species at a bird watching occasion, though it is limited to the sightings of urban birds.

Subject to criteria for green space, attaining plenty of bird species provides understanding of food availability, the support services and opportunity for urban birds to thrive in midst the opportunity for resources such as food, perching grounds and sufficient numbers of counterparts to reproduce into healthy urban bird populations.

The purpose of this study is to frame the dimensions of the external institutional environment, namely, cultural-cognitive, normative and regulative dimensions as the main actors in the organisational field. More precisely, Libyan commercial banks have been identified as empirical evidence, to identify constraints of the institutional environment governing the behaviour and decision-making of commercial banks, when adopting Islamic financial transactions.

A questionnaire has been designed for 14 Libyan commercial banks which is distributed to the Board of Directors, managers, directors of departments, and personnel. The exploratory factor analysis (EFA) and the measurement model by using the first-order and second-order confirmatory factor analysis (CFA) have been applied as essential steps to embody the conceptual framework and test the research hypotheses.

The results of the EFA indicated sufficient correlation among the dimensions of the external environment. The CFA supported this study’s hypotheses. The modelling showed that the cultural-cognitive, normative and regulative dimensions are institutional constraints impeding Libyan commercial banks’ adoption of Islamic financial transactions. Interestingly, the findings of the CFA align with the EFA findings in supporting the conceptual framework of the research. They portrayed that the cultural-cognitive dimension has been identified by explicit and implicit cognition.

This study systematically embodies the dimensions of the external institutional environment, namely, cultural-cognitive, normative and regulative dimensions, as the main factors in the organisational field to be conceptually rich lenses to investigate social considerations to reinforce institutional thought broadly. The results of this study were consistent with extant Islamic financial literature, reflecting symmetry and similarity across commercial banks, particularly at the first stage of adopting Islamic financial transactions.