function migratoryBirds(arr: number[]): number {
    let map = new Map();
    let maxCount = 0;
    let mostFriquentBird = Number.MAX_SAFE_INTEGER;
    
    for (let bird of arr) {
        let count = (map.get(bird) || 0) + 1;
        map.set(bird, count);
        
        if (maxCount < count || (maxCount === count && bird < mostFriquentBird)) {
            maxCount = count;
            mostFriquentBird = bird;
        }
    }
    
    return mostFriquentBird;
}